Bacon Boyle Galileo Hobbes 1 Hobbes 2 Hobbes 3 Descartes  Meditations 1  Meditations 2  Meditations 3a  Meditations 3b  Meditations 4

Meditations 5  Meditations 6a  Meditations 6b  Cartesian Science  Principles I.1-23  Principles I.24-47  Principles I.48-76  Principles II.1-23  Principles II-IV

Newton 1  Newton 2 Essay I  Essay II.i-vii  Essay II.viii-xi  Essay II xii-xxiii  Essay II.xxi  Essay II.xxvii  Essay III.iii-vi  Essay IV.i-iii  Essay IV.iv-xi  Essay IV.xiv-xvi

Essay IV.xviii-xix  Bayle  Berkeley  Berkeley 1  Berkeley 2  Enquiry IV  Enquiry V.i  Enquiry V.ii  Enquiry VI-VII  Enquiry VIII  Enquiry X  Enquiry XII

 

1

Bacon

Preface to The great instauration;

The new organon, Aphorisms 1-46;

selections from The advancement of learning

(Works IV: 13-17, 20-27, 47-57, and 294-98)

 

   1.    Over the opening aphorisms of Book II of the New organon (not assigned as part of the reading for this section) Bacon articulated what he meant by the form of a thing and took a position on why it is that change occurs when “actives” and “passives” are brought into contact with one another.  Obtain a copy of the complete New organon and, proceeding from a study of the opening aphorisms of Book II as well as of the assigned readings, attempt to answer as many of the following questions as you can:  What was the extent of Bacon’s commitment to an atomistic or at least corpuscularian account of nature (one that attributes all change to the mixture and separation of particles)?  Is this commitment consistent with his inductivism, that is, can it plausibly be supposed to be inductively well grounded?  Is the commitment, if there is any at all, only partial, that is, does Bacon think that corpuscular accounts are correct only for certain phenomena but not all?  What hope did Bacon hold out for our ever being able to reach an exact knowledge of the forms of things, whatever their exact nature may be?

   2.    Kant famously observed that while experience is able to tell us that something is now the case, it is not able to tell us that is must always or everywhere be so.  In light of this observation, is Bacon’s inductivist method feasible?  Could any process of induction ever be adequate to put us in a position to make a general assertion or would a leap (i.e., a “hasty generalization” of some sort) always have to be involved if we were to formulate any general theories of nature whatsoever?  How rigorous was Bacon’s inductivism, that is, how much experiment and testing did he think we must do before being entitled to make a generalization?  Might he have thought that an inductive leap becomes legitimate after a certain point?  In answering this question, give careful attention to the example Bacon gives of inductively discovering the cause of heat.  This example is given in Book II of the New organon (which you will have to obtain separately, since it is not included in the readings for this course).

   3.    How adequate is Bacon’s answer to scepticism?  Assess whether a committed sceptic might or might not be able to mount a challenge to Bacon’s position.

 

2

Boyle

“On the Excellency and Grounds of the Corpuscular or Mechanical Philosophy”

(Matthews, 109-118)

 

   1.    Consult a number of recent histories of technology and invention to ascertain what were the main technological innovations and inventions to be discovered in the sixteenth and seventeenth centuries.  Attempt to determine what led to these discoveries.  Were the chief inventions and innovations mechanical in nature (i.e., did they involve the invention of new types of mechanical devices) or were they chemical or biological (e.g. smelting of new alloys, breeding of new species, development of new agricultural techniques)?  Did the inventor deduce how to build the device or make the technological innovation ahead of time, by applying some general theory (e.g. of mechanics) to the problem and only subsequently test to see if the device would work; was the invention or innovation designed only through a long process of trial and error; or was the invention or innovation the product of happenstance?  Does your research support the claim, made at the outset of this chapter, that interest in and acceptance of the mechanical philosophy was spurred by the type of technological advances made in the 16th and 17th centuries?

   2.    Boyle held Bacon in high esteem, yet many of the reasons he offers for accepting the corpuscular or mechanical philosophy make what Bacon ought consistently to have condemned as an appeal to idols of the tribe and idols of the theatre, and in other works he makes remarks that might be interpreted as saying that he took the mechanical philosophy to be merely a hypothesis that had not yet been adequately confirmed by the evidence.  This has led many scholars to question the extent of Boyle’s commitment to the corpuscular or mechanical philosophy.  In a classic paper, “Newton, Boyle, and the Problem of ‘Transdiction’,” (in his Philosophy, Science, and Sense Perception [Baltimore: Johns Hopkins Press, 1964], 61-117, esp. 88-112) Maurice Mandelbaum responded to these scholars by arguing that Boyle was able to reconcile a commitment to the corpuscular or mechanical philosophy with a fundamentally Baconian position on the need to justify a theory by induction from experience.  Focusing on a reading of pp. 99-112 of Mandelbaum’s paper, reconstruct his position in your own words.  If you find his position to be unclear or unpersuasive on certain points, say so and explain why.

   3.    Undertake as extensive a survey of Boyle’s works as possible and attempt to answer the following questions as best you can in the light of that survey:  To what extent was Boyle committed to the truth of the mechanical hypothesis?  Might his degree of commitment to that hypothesis have changed over time?  If he was committed to it to any degree, what was the ground of his commitment to it?  Be explicit about the influence (or lack of influence) of the following factors on his thought: the development of microscopy; the mechanistic (or non-mechanistic) character of important technological innovations and inventions of his time; the extent to which it really seemed to Boyle that all the phenomena of nature could be accounted for mechanistically, including such recalcitrant phenomena as gravitation, hardness, and cohesion.

   4.    Determine to what extent a concern to justify a mechanical account of the spring of air was foundational for Boyle’s discoveries about the relation between the pressure, volume and temperature of a gas.

 

3

Galileo, “Il Saggiatore” (The Assayer)

(Matthews, 53-61)

 

   1.    Galileo supposed that sensible qualities “reside exclusively in our sensitive body.”  Consider what this might mean and whether this is a plausible or consistent view.  Would it have been possible for him to deny that sensible qualities exist even in us?  If they exist in us, how do they exist in us?  Did Galileo mean to endorse the Aristotelian view that for me to sense a quality like red or hot is for me to literally become red or hot?  If he is willing to allow that sensible qualities exist in our sensitive body, then why not allow that they exist in other bodies as well?

   2.    Assess the adequacy of Galileo’s argument against the objective existence of sensible qualities.  Are the considerations Galileo advanced for his position really compelling?  Are they too compelling, that is, might they work just as well to prove that shape and motion have no objective existence?  Might Galileo have advanced other, more compelling arguments against the objective existence of the sensible qualities (think of the traditional sceptical modes or the reasons advanced by Epicurus in the letter to Herodotus)?  Would these arguments have been “too compelling” (in the sense just mentioned) had he dared to use them?  Could an Aristotelian mount an equally compelling argument for the rival view that sensible qualities do inhere in objects?

 

4

Hobbes, Human nature I-III

(Gaskin, 21-30)

 

   1.    Assess the adequacy of the arguments that Hobbes used over HN II to prove that the sensible qualities are unreal.  How might someone who is committed to the external existence of these qualities respond to Hobbes’ arguments, and how effective would those responses be?

   2.    At HN I.2, Hobbes said he would base his work on what people know by experience.  At HN II.10 he said that, “whatsoever accidents or qualities our senses make us think there be in the world, they are not there, but are seemings and apparitions only.”  He further claimed that “The things that really are in the world without us, are those motions by which these seemings are caused.”  But if all our knowledge is supposed to be based on experience, and whatever our senses make us think there is in the world is not there, how could Hobbes have claimed to know anything about what really exists in the world without us, particularly that what is real are “motions?”

   3.    Assess the adequacy of Hobbes’ claim that sensible qualities are merely the way that motions of the parts of our brains appear to us.  Aside from problems of justification (raised in the previous question) the claim poses the problem of how a motion could even “appear” as a colour, sound, smell, taste or feeling, and the problem of where colour, sound, smell, taste and feeling exist if they do not exist in our bodies.  What alternatives did Hobbes have to making this claim, supposing that he wanted to insist that sensible qualities do not exist outside of us and that the only effect that a moving object can have on another object is to move it?  Is the existence of sensible qualities an irresolvable problem for Hobbes, or is there some way to reconcile the apparent existence of sensible qualities with a mechanistic account of sensation and sensations and a purely materialist account of the mind?

   4.    Hobbes’ problems defining memory are not unique.  Undertake a critical survey of attempts to explain the phenomenon of memory in the early modern period.

 

5

Hobbes, Human nature IV-VI

(Gaskin, 31-43)

 

   1.    Explain in detail how Hobbes could have taken the chain of thought involved in “ranging,” “reminiscence,” “expectation,” “conjecture,” and “prudence” to be produced by purely mechanical operations.  Setting aside all contemporary knowledge of the workings of the brain and central nervous system and judging just from the perspective of the time, is this enterprise successful, or do you see difficulties with explaining these mental phenomena purely by appeal to motions occurring in the brain and heart?

   2.    Can the enterprise of explaining the sequence of our thoughts as a consequence of purely mechanical operations be extended to account for our use of language and for scientific “reckoning” involving names, or is there something about language and scientific reasoning that resists reduction to the consequences of colliding motions in the brain?  Does Hobbes’ project of giving a mechanical account of the workings of the mind break down when it gets to these operations?

   3.    Consider, by reference to Leviathan IV-V and De corpore VI.11-19 whether Hobbes’ rejection of universals is consistent with his views on simple natures.  Are simple natures a kind of universal?

   4.    Simple natures figure importantly in the philosophies of Bacon, Hobbes, and the early Descartes (in his Rules for the direction of the mind).  Attempt a history of the development and employment of this notion by philosophers in the early modern period.

 

6

Hobbes, Human Nature VII.1-2, XII, XI

(Gaskin, 43-44, 70-73, 64-70)

 

   1.    Drawing on the notes, HN VI.5-9 and XI, and Leviathan I.xi, III.xxxiii, xxxvii, and xlii, describe Hobbes’ account of the basis for religious faith, being careful to specify the role played by each of testimony, miracles, conformity to scripture, and authority in that account.  Try to reach a verdict on the respective roles of reason (say in authenticating miracle claims, adjudicating testimony, or drawing conclusions from the design in nature) and revelation (whether accepted by a leap of faith, on the evidence of reason, or as a result of irresistible Grace) in that account.  Outline some problems with the account in addition to the one mentioned in the notes.

   2.    Did Hobbes make a compelling case for denying freedom of the will?

   3.    Did Hobbes make a compelling case for soft determinism?

   4.    Supposing Hobbes was right in what he said about the will, does it still make sense to praise, blame or punish people for their actions? Does it make any sense to legislate moral rules?  Even if it does not make sense to legislate moral rules, might it still make sense legislate civil laws and enforce them with punishments?

   5.    How would Hobbes have accounted for what is termed weakness of the will?

 

7

Descartes, Discourse on method I-II and V

(AT VI 1-22 and 55-60)

 

   1.    Assess the strength of Descartes’ arguments for the existence of a soul distinct from the body, as those arguments are laid out in Discourse V.

   2.    Assess the strength of Descartes’ reasons for denying that animals have souls.

   3.    Speculate on how Hobbes would reply to Descartes’ reasons for claiming that rational souls “can in no way be derived from the potentiality of matter,” drawing on his account of the causes of the use of signs and the basis for our reasoning as that account is laid out in Human nature IV-VI; De corpore I.1-5, VI.1-6,11-18; and Leviathan IV-V.

   4.    Consider which (if either) of the two, Hobbes or Descartes, had the best arguments for his position on human nature.  Was Hobbes’ attempt to come up with a mechanical account of the workings of the mind any more compelling than Descartes’ reasons for claiming that there can be no such account?

 

8

Descartes, Meditations I

 

   1.    Was Descartes entitled to claim that there is no way to distinguish waking from dreaming?

   2.    Was Descartes entitled to claim that the truths of arithmetic and geometry are not called into doubt by the dreaming argument?

   3.    Could a deceiver who systematically deceives me, and ensures that I never come across any evidence of my mistake, really be a deceiver?

   4.    Is there anything that escapes the doubts cast on sense experience and reasoning by the dreaming and the deceiver arguments?

 

9

Descartes, Meditations II

 

   1.    What is the basis for Descartes knowledge of his own existence? Did he base it on a piece of reasoning or an argument, or did he come to know it in some other way?  If the former, how is his knowledge compatible with the possible existence of an evil genius?  If the latter, how is his knowledge to be understood?

   2.    Was Descartes entitled to claim, at this stage in his argument, that he did not need to have a body in order to be able to understand, affirm, deny, doubt, will, etc.?

   3.    Could an evil genius make me be mistaken about what it is that I am thinking?  Would Descartes have allowed that self-deception is possible?

   4.    Descartes claimed to know that he is a thinking thing.  However, to say that what exists is a “thing” suggests that there is something that bears properties (in this case, that there is something that has thoughts) and that this thing endures over time, perhaps altering in state (i.e., changing its thoughts) over time.  Is there anything in Descartes’s account in Meditations II that might entitle him to affirm that, in addition to the thoughts that he knew must exist, there must be some one substance in which they all inhere?

 

10

Descartes, Meditations IIIa

(AT VII 34-42)

 

   1.    Descartes’s discussion of the formal and objective reality of ideas raises issues of what ideas are and how they refer to objects.  These issues came to be hotly debated in the ensuing years (and have been discussed ever since).  The two chief protagonists in the

 

subsequent debate were Descartes’s younger contemporary and one-time critic, Antoine Arnauld (left, one of the leaders of the Jansenist movement in 17th century French Catholicism), and the Oratarian priest, Nicholas Malebranche (right), who developed a Neo-Cartesian philosophy of his own.  The chief point in dispute between Malebranche and Arnauld was whether ideas are objects of apprehension (the view of Malebranche), or acts whereby objects are apprehended (the view of Arnauld).  The Malebranche/Arnauld dispute has been the subject of extensive scholarly study, but two early papers on the topic are classics that should be read by any student of 17th century philosophy: Robert McRae, “‘Idea’ as a Philosophical Term in the 17th Century,” Journal of the history of ideas 26 (1965): 175-184, and John Yolton, “Ideas and Knowledge in Seventeenth-Century Philosophy,” Journal of the history of philosophy 13 (1975): 145-166. Study these two papers and report on the main results of each.

   2.    Does Descartes have a principled way of distinguishing between what is known by the “light of nature” and what is known by “natural impulse”?

   3.    Consider whether Descartes is in any position to claim to be certain of either of the causal principles he invokes in Meditations III.  Try to come up with the best argument you can to defend his position and the best argument you can to reject it.  Determine which argument is the strongest.

 

11

Descartes, Meditations IIIb

(AT VII 42-52, cf. Discourse IV, AT VI 33-36)

 

   1.    Descartes’s notion of eminent causality is drawn from medieval philosophy.  Undertake a research project to discover just how this notion was understood by medieval philosophers.  (Note that rather than speak of eminent causality, the medievals might have instead discussed eminent containment of a form, which they would have contrasted with literal exhibition of a form.)  Determine whether the medievals managed to articulate a clear, coherent sense in which it is possible for a thing to contain a form it does not literally exhibit.  Then determine whether Descartes had any right to employ this notion (note that, despite the doubts of Meditations I, he only needed to make a case that it is possible that there might be eminent causes).  If he dids have a right to employ the notion, did he also have a right to make the further claim that he could be the “eminent” cause of his idea of extension?

   2.    Outline Descartes’s reasons for denying that we could have caused our ideas of God.  Comment on whether these reasons are compelling.  If not, say why not.  Consider whether there might be other reasons for supposing that we cause our ideas of God ourselves, in addition to the ones that Descartes considered.

   3.    Obtain a complete copy of Descartes’s Meditations.  (Complete copies contain, in addition to the six meditations, six sets of objections together with Descartes’s replies to those objections.)  In the standard pagination of the Adam and Tannery edition, Mersenne’s charge that Descartes argued in a circle is to be found at pp.124-25, Arnauld’s at p.214 and Descartes’s replies at pp.140-141, 144-46, and 245-46.  Comment on whether Descartes’s answer to Mersenne and Arnauld is adequate.

 

12

Descartes, Meditations IV

 

   1.    Compare Descartes’s position on the freedom of the will, as presented in Meditations IV with Hobbes’s, as presented in Human nature XII, and determine which is more plausible and which provides a more thorough and adequate account of the phenomena of the will.  Note that Hobbes authored the third set of comments on Descartes Meditations (like Arnauld, mentioned in the previous chapter, Hobbes was one of the individuals whose comments were solicited by Mersenne and were bound in with the complete editions of the Meditations).  In his twelfth objection, Hobbes charged that Descartes had merely assumed the freedom of the will without proof and that his position is not obviously true, as it is denied by many, notably Calvinists (i.e., those who believe in predestination and the possibility of doing good only through Grace).  Assess the adequacy of Descartes’s reply to Hobbes on this matter.

 

13

Descartes, Meditations V

 

   1.    Do a comparative study of the employment of the notions of clarity/obscurity and distinctness/confusion by philosophers of the 17th and 18th centuries (in addition to Descartes, important figures to consider include Hobbes, Locke, Spinoza, and Leibniz, as well as the authors of seventeenth century logic textbooks that discuss these notions).  Attempt to identify any significant divergences in the way these notions are understood.  Look also at accounts of immediate or intuitive knowledge as they appear in the works of these authors and attempt to ascertain any connection there might be between the notion of clear and distinct perception and the notion of intuitive knowledge.  Is it the case, for example, that clear and distinct perception simply consists in seeing one idea analytically contained inside of another and that it is this direct perception of containment that constitutes intuitive knowledge?

   2.    Assess the adequacy of Descartes’s attempt to defend his ontological argument for the existence of God against the objections he himself raises to that argument.  Consider whether there are any other, more serious objections he fails to consider and then consider whether he could also answer those objections.

   3.    Based on a survey of Descartes’s remarks in the Meditations, Replies to objections to the Meditations, Principles of philosophy Part I, and in his correspondence, try to determine exactly what his position was on why we need to be assured of the existence of God in order to know other things, and what those other things are.  Do I need to be assured of the existence of God before I can know any of the things I clearly and distinctly perceive, including my own existence, or just some of these things?  Or is it rather the case that I need to be assured of the existence of God before Ie can be assured of the conclusion of a demonstration, but not of the truth of those things that I clearly and distinctly perceive without the assistance of a demonstration?  Or is it just the case that Ie only need to be assured of the existence of God before I can be assured of the conclusions of demonstrations I am not now contemplating, but only remember having performed and clearly and distinctly perceived?

   4.    How serious is the following objection:  At the close of Meditations V, Descartes claimed that a proof of the existence of God puts us in a position to rely on the memory of having clearly and distinctly perceived or demonstrated a truth.  But, unlike clear and distinct perception, which is an act of the understanding that can arguably be considered to be infallible, remembering is an act of memory, and we know from experience that our memories are unreliable and can often perceive us.  Moreover, the argument of Meditations IV does nothing to establish the reliability of memory (it only establishes the reliability of clear and distinct perception).  Since we have good reason to doubt the reliability of memory, we still cannot rely on the truth of demonstrations that we only remember having performed, Descartes’s proof of the existence of God notwithstanding.  Could Descartes have replied to this objection?  If so, how?  If not, might he still have been able to go on to say everything he did in Meditations VI or would his other conclusions be put in jeopardy?

   5.    Does anything that Descartes had to say in Meditations V help to answer the objection that there is a circularity in his demonstration of the existence of God in Meditations III?

   6.    How does the Meditations V argument for the existence of God differ from the Meditations III argument?  Why is the Meditations V argument necessary?  Might it just as well have been given in Meditations III or is there something about the Meditations V argument that makes it dependent on the results of Meditations IV?  Is the Meditations III argument any less dependent on the conclusions of Meditations IV than the Meditations V argument?

 

14

Descartes, Meditations VIa

(AT VII 71-80; cf. Discourse IV, AT VI 39-40)

 

   1.    Is Descartes entitled to affirm the separability principle?  That is, from the fact that I can clearly and distinctly perceive one thing without another, does it have to follow that the one thing must be capable of existing apart from one another?

   2.    Has Descartes made a convincing case for the claim that minds could exist apart from bodies and that thought and feeling do not have to involve any operation of an extended thing?

   3.    According to Descartes, I can be sure that external objects exist because I find in myself a strong inclination to suppose that my ideas of sense are caused by such objects, and God would be a deceiver for giving me such an inclination were there no such objects in existence. But, by the same token, I find in myself a strong inclination to suppose that bodies possess colour and other sensible qualities.  Yet Descartes appears not to have wanted to conclude that external objects must therefore be coloured and possessed of the other sensible qualities. How can this be?  Is Descartes’s position on the demonstrability of the existence of extended objects but the undemonstrability of the existence of coloured objects consistent?  If so, say why.  If not, say why not.

 

15

Descartes, Meditations VIb

 

   1.    Over the course of the Meditations, and particularly over the second half of Meditations VI, Descartes frequently invoked the term, “nature,” and discriminated a number of different kinds of “nature” and senses in which he wanted the term,”nature” to be understood.  “Nature taken generally” is defined at AT VII 80, but there is another definition of “nature taken more narrowly” at AT VII 82.  Descartes outlined correspondingly different accounts of what is “taught by nature” in each of these senses and what is taught to us by “a certain habit of making reckless judgments.”  At AT VII he also contrasted what has been “taught by nature” with what is known in the “light of nature.” And over AT VII 84-85 “nature” is used again in a “latter” and a “former” sense that do not bear any obvious relation to either the “general” or the “narrow” definitions of “nature.”  Taking all of these passages into account, formulate a general account of Descartes’s position on “nature” in all of its senses.  Determine whether he managed to clearly separate the different senses of the term.

   2.    Did Descartes have any principled way of distinguishing between what is “taught to us by nature” and what is taught to us by “a certain habit of making reckless judgments” or is this distinction irredeemably confused and ambiguous?

   3.    Undertake a study of Descartes’s correspondence and that of his contemporaries in order to determine exactly what problems he got into over the issue of the Eucharist and why.

   4.    One of Descartes’s most astute critics was Princess Elizabeth of Bohemia, who pressed him on the issue of the nature of the relation between the soul and the body.  Descartes’s The passions of the soul is in part an attempt to address her concerns.  Do a study of Descartes’s correspondence with Elizabeth and draw up an account of what Elizabeth’s main concerns were and how Descartes attempted to address them.  Assess the adequacy of Descartes’s responses to Elizabeth.

   5.    Undertake this same project with reference to Descartes replies to the author of the fifth set of the objections to the Meditations, Pierre Gassendi.

   6.    Did Descartes come up with an adequate response to the dreaming argument?

 

16

Cartesian Science

(Discourse V, AT VI 40-45; Discourse VI, AT VI 63-65; Matthews, 99-108; Principles of Philosophy II.1-23 available in course packet or in The Continental Rationalists electronic database)

 

   1.    Descartes’s position that there is no such thing as space, but just extended bodies in a plenum, was challenged in his own day by Pierre Gassendi, and in the generation after by Isaac Newton.  Both Gassendi and Newton maintained that space is something in its own right, that would continue to exist even if bodies were annihilated, and Newton maintained that an “absolute space” (a space that is not defined relative to bodies but is supposed to be separate from them and immovable) must be presupposed as an ultimate reference frame for inertial motion.  Newton’s claims that space is absolute and independent of bodies were later attacked by Gottfried Leibniz and defended by Samuel Clarke, in a correspondence that was widely published at the time and continues to be reprinted.  Write an essay on one or more of the following: Gassendi’s reasons for rejecting Descartes’s position, Newton’s reasons for rejecting Descartes’s position, Leibniz’s reasons for rejecting Newton’s position, Leibniz’s own position on space, Clarke’s reasons for rejecting Leibniz’s position.  In each case assess the adequacy of the reasons presented vis à vis the adequacy of the reasons for the rival position.  Gassendi’s views can be found in Craig B. Brush, ed., The selected works of Pierre Gassendi (New York: Johnson Reprint Corp., 1972), pp.383-390. Newton’s can be found in the selection from the Scholium on absolute space and time in Matthews.  Leibniz’s correspondence with Clarke is available in multiple, separate volumes and in various collections of Leibniz’s works.

   2.    Descartes’s position that the essence of body consists just of extension, so that whatever other real qualities a body might in fact have are ones that would have to be merely accidental to it and that it could stand to lose without ceasing to be a body, was in perfect accord with the mechanistic outlook of the early seventeenth century, but it was challenged in the later part of the century.  Locke maintained, in opposition to Descartes, that bodies must have a real quality of solidity in addition to extension.  Newton maintained that all the bodies we know of are impenetrable and have mass.  And Leibniz argued that bodies must be conceived as centers of force.  One force that Leibniz attributed to bodies is a repulsive force, responsible for impenetrability and the communication of motion upon collision.  Leibniz briefly explained why this force must be supposed essential to bodies in Part II, Article 4 of his “Critical Remarks [or ‘Critical Animadversions,’ as it is sometimes translated] on the General Part of the Principles of Descartes” (available in various edited translations of Leibniz’s works), as well as in a paper, “Whether the Essence of a Body consists in Extension,” published in the Journal des savans of June 18, 1691 and available in translation in Philip P. Weiner’s collection (Leibniz. selections.  New York: Scribner, 1951).  Recount Leibniz’s argument against Descartes and assess its adequacy.

   3.    Leibniz’s view that repulsive force is responsible for the transmission of motion upon impact naturally led him to suppose that collisions would always have to be elastic.  This is turn led him to attack Descartes’s account of the laws of collision on the ground that they violate a fundamental metaphysical principle, the law of continuity.  Outline Descartes’s account of the laws of collision as stated over Part II, Articles 46-53 of his Principles of philosophy and Leibniz’s critique, given over Part II, Articles 46-53 of his “Critical remarks on Descartes’s principles.”

   4.    In Part II, Article 36 of his Principles of philosophy Descartes maintained that the same quantity of motion is present after collision as before, so that quantity of motion is conserved through collision.  Leibniz objected to this view, maintaining that it is rather the quantity of moving force in bodies that is conserved through collision.  (The moving force or “vis viva” is another of the forces Leibniz attributed to bodies.)  Descartes considered the quantity of motion to be the product of the quantity of matter and its speed, a formula very close to that Newton was to propose when he maintained that momentum or the product of the mass of the moving bodies and their velocities is conserved through collision.  Leibniz, in contrast, maintained that what is conserved is not the product of mass and velocity, but the product of mass and the square of velocity.  This led to a protracted controversy, the so-called vis viva controversy, that divided Leibnizian and Newtonian physicists over the better part of the 18th century.  Leibniz’s original reasons for rejecting the Cartesian view are found in many places: in Part II, Article 36 of his “Critical comments on Descartes’s principles,” in article 17 of his Discourse on metaphysics, and in a paper entitled, “A Brief Demonstration of a Notable Error of Descartes and Others concerning a Natural Law,” published in the Acta eruditorium of March 1686 and widely available in collections of Leibniz’s works.  Recount Leibniz’s reasons for disagreeing with Descartes.

 

16a

Descartes

(Principles I.1-23)

 

   1.    Was Descartes entitled to claim that there is no way to distinguish waking from dreaming?

   2.    Could a deceiver who systematically deceives me, and ensures that I never come across any evidence of my mistake, really be a deceiver?

   3.    Was Descartes entitled to claim, at this stage in his argument, that he did not need to have a body in order to be able to understand, affirm, deny, doubt, will, etc.?

   4.    Could an evil genius make me be mistaken about my intuitions?

   5.    Descartes claimed to know that he is a thinking thing.  However, to say that what exists is a “thing” suggests that there is something that bears properties (in this case, that there is something that has thoughts) and that this thing endures over time, perhaps altering in state (i.e., changing its thoughts) over time.  Is there anything in Descartes’s account that might entitle him to affirm that, in addition to the thoughts that he knew must exist, there must be some one substance in which they all inhere?

   6.    Assess the adequacy of Descartes’s attempt to defend his ontological argument for the existence of God against the objections he himself raises to that argument.  Consider whether there are any other, more serious objections he fails to consider and then consider whether he could also answer those objections.

 

   7.    Descartes’s discussion of the formal and objective reality of ideas raises issues of what ideas are and how they refer to objects.  These issues came to be hotly debated in the ensuing years (and have been discussed ever since).  The two chief protagonists in the subsequent debate were Descartes’s younger contemporary and one-time critic, Antoine Arnauld (left, one of the leaders of the Jansenist movement in 17th century French Catholicism), and the Oratarian priest, Nicholas Malebranche (right), who developed a Neo-Cartesian

 

philosophy of his own.  The chief point in dispute between Malebranche and Arnauld was whether ideas are objects of apprehension (the view of Malebranche), or acts whereby objects are apprehended (the view of Arnauld).  The Malebranche/Arnauld dispute has been the subject of extensive scholarly study, but two early papers on the topic are classics that should be read by any student of 17th century philosophy: Robert McRae, “‘Idea’ as a Philosophical Term in the 17th Century,” Journal of the history of ideas 26 (1965): 175-184, and John Yolton, “Ideas and Knowledge in Seventeenth-Century Philosophy,” Journal of the history of philosophy 13 (1975): 145-166. Study these two papers and report on the main results of each.

   8.    Does Descartes have a principled way of distinguishing between what is known by the “light of nature” and what is known by “natural impulse”?

   9.    Consider whether Descartes is in any position to claim to be certain of any of the causal principles he invokes in Principles I.18.  Try to come up with the best argument you can to defend his position and the best argument you can to reject it.  Determine which argument is the strongest.

10.    Descartes’s notion of eminent causality is drawn from medieval philosophy.  Undertake a research project to discover just how this notion was understood by medieval philosophers.  (Note that rather than speak of eminent causality, the medievals might have instead discussed eminent containment of a form, which they would have contrasted with literal exhibition of a form.)  Determine whether the medievals managed to articulate a clear, coherent sense in which it is possible for a thing to contain a form it does not literally exhibit.  Then determine whether Descartes had any right to employ this notion (note that, despite the doubts of Meditations I, he only needed to make a case that it is possible that there might be eminent causes).  If he dids have a right to employ the notion, did he also have a right to make the further claim that he could be the “eminent” cause of his idea of extension?

 

16b

Descartes

(Principles I.24-47)

 

   1.    Compare Descartes’s position on the freedom of the will, as presented in Principles I.24-50 with Hobbes’s, as presented in Human nature XII, and determine which is more plausible and which provides a more thorough and adequate account of the phenomena of the will.  Note that Hobbes authored a set of comments on Descartes Meditations (the third set in the so-called “objections and replies,” commonly in with the editions of the Meditations).  In his twelfth objection, Hobbes charged that Descartes had merely assumed the freedom of the will without proof and that his position is not obviously true, as it is denied by many, notably Calvinists (i.e., those who believe in predestination and the possibility of doing good only through Grace).  Assess the adequacy of Descartes’s reply to Hobbes on this matter.

 

16c

Descartes

(Principles I.48-76)

 

   1.    How does Descartes’s position on the nature of universals fit in with the traditional debate between realists, who take there to be universal things existing in reality, nominalists, who maintain that everything that exists is a particular and that the only things that are universals are certain words that are used to stand for groups of particulars, and conceptualists, who maintain that while there are no universal things there may be abstract ideas in the mind that represent just the common or general features of groups of things?

   2.    Outline Descartes’s account of real, modal, and conceptual distinctions and explain to what extent the claims of Principles I.48-76 concerning mind, body, and sensation are grounded in that account.

   3.     Is Descartes’s notion of conceptual distinctions ultimately intelligible?  If two things cannot be separated from one another, how can they be at all distinct?  If they are distinct, how can they be inseparable?  How can an attribute such as thought or extension be conceptually distinct from a substance such as mind or body if the substance is inconceivable apart from the attribute?  What are we conceiving when we conceive a distinction in this case?

   4.    Is there any way that Principles I might be read as itself justifying the claim that the qualities revealed to us by our senses do not exist outside of us in bodies?  If this claim is only justified in later sections of the Principles, is it appropriate that it be relied on so heavily in this section?

 

16d

Descartes

(Principles II.1-23)

   1.    Is Descartes entitled to affirm the separability principle?  That is, from the fact that I can clearly and distinctly perceive one thing without another, does it have to follow that the one thing must be capable of existing apart from one another?

   2.    Has Descartes made a convincing case for the claim that minds could exist apart from bodies and that thought and feeling do not have to involve any operation of an extended thing?

   3.    According to Descartes, I can be sure that external objects exist because I find in myself a strong inclination to suppose that my ideas of sense are caused by such objects, and God would be a deceiver for giving me such an inclination were there no such objects in existence. But, by the same token, I find in myself a strong inclination to suppose that bodies possess colour and other sensible qualities.  Yet Descartes appears not to have wanted to conclude that external objects must therefore be coloured and possessed of the other sensible qualities. How can this be?  Is Descartes’s position on the demonstrability of the existence of extended objects but the undemonstrability of the existence of coloured objects consistent?  If so, say why.  If not, say why not.

   4.    One of Descartes’s most astute critics was Princess Elizabeth of Bohemia, who pressed him on the issue of the nature of the relation between the soul and the body.  Descartes’s The passions of the soul is in part an attempt to address her concerns.  Do a study of Descartes’s correspondence with Elizabeth and draw up an account of what Elizabeth’s main concerns were and how Descartes attempted to address them.  Assess the adequacy of Descartes’s responses to Elizabeth.

   5.    Descartes’s position that there is no such thing as space, but just extended bodies in a plenum, was challenged in his own day by Pierre Gassendi, and in the generation after by Isaac Newton.  Both Gassendi and Newton maintained that space is something in its own right, that would continue to exist even if bodies were annihilated, and Newton maintained that an “absolute space” (a space that is not defined relative to bodies but is supposed to be separate from them and immovable) must be presupposed as an ultimate reference frame for inertial motion.  Newton’s claims that space is absolute and independent of bodies were later attacked by Gottfried Leibniz and defended by Samuel Clarke, in a correspondence that was widely published at the time and continues to be reprinted.  Write an essay on one or more of the following: Gassendi’s reasons for rejecting Descartes’s position, Newton’s reasons for rejecting Descartes’s position, Leibniz’s reasons for rejecting Newton’s position, Leibniz’s own position on space, Clarke’s reasons for rejecting Leibniz’s position.  In each case assess the adequacy of the reasons presented vis à vis the adequacy of the reasons for the rival position.  Gassendi’s views can be found in Craig B. Brush, ed., The selected works of Pierre Gassendi (New York: Johnson Reprint Corp., 1972), pp.383-390. Newton’s can be found in the selection from the Scholium on absolute space and time in Matthews.  Leibniz’s correspondence with Clarke is available in multiple, separate volumes and in various collections of Leibniz’s works.

   6.    Descartes’s position that the essence of body consists just of extension, so that whatever other real qualities a body might in fact have are ones that would have to be merely accidental to it and that it could stand to lose without ceasing to be a body, was in perfect accord with the mechanistic outlook of the early seventeenth century, but it was challenged in the later part of the century.  Locke maintained, in opposition to Descartes, that bodies must have a real quality of solidity in addition to extension.  Newton maintained that all the bodies we know of are impenetrable and have mass.  And Leibniz argued that bodies must be conceived as centers of force.  One force that Leibniz attributed to bodies is a repulsive force, responsible for impenetrability and the communication of motion upon collision.  Leibniz briefly explained why this force must be supposed essential to bodies in Part II, Article 4 of his “Critical Remarks [or ‘Critical Animadversions,’ as it is sometimes translated] on the General Part of the Principles of Descartes” (available in various edited translations of Leibniz’s works), as well as in a paper, “Whether the Essence of a Body consists in Extension,” published in the Journal des savans of June 18, 1691 and available in translation in Philip P. Weiner’s collection (Leibniz. selections.  New York: Scribner, 1951).  Recount Leibniz’s argument against Descartes and assess its adequacy.

 

16e

Descartes

(Principles II.33-40, 64; IV.189-99, 203-4; Discourse VI [AT VI: 63-65])

   1.    Leibniz’s view that repulsive force is responsible for the transmission of motion upon impact naturally led him to suppose that collisions would always have to be elastic.  This is turn led him to attack Descartes’s account of the laws of collision on the ground that they violate a fundamental metaphysical principle, the law of continuity.  Outline Descartes’s account of the laws of collision as stated over Part II, Articles 46-53 of his Principles of philosophy and Leibniz’s critique, given over Part II, Articles 46-53 of his “Critical remarks on Descartes’s principles.”

   2.    In Part II, Article 36 of his Principles of philosophy Descartes maintained that the same quantity of motion is present after collision as before, so that quantity of motion is conserved through collision.  Leibniz objected to this view, maintaining that it is rather the quantity of moving force in bodies that is conserved through collision.  (The moving force or “vis viva” is another of the forces Leibniz attributed to bodies.)  Descartes considered the quantity of motion to be the product of the quantity of matter and its speed, a formula very close to that Newton was to propose when he maintained that momentum or the product of the mass of the moving bodies and their velocities is conserved through collision.  Leibniz, in contrast, maintained that what is conserved is not the product of mass and velocity, but the product of mass and the square of velocity.  This led to a protracted controversy, the so-called vis viva controversy, that divided Leibnizian and Newtonian physicists over the better part of the 18th century.  Leibniz’s original reasons for rejecting the Cartesian view are found in many places: in Part II, Article 36 of his “Critical comments on Descartes’s principles,” in article 17 of his Discourse on metaphysics, and in a paper entitled, “A Brief Demonstration of a Notable Error of Descartes and Others concerning a Natural Law,” published in the Acta eruditorium of March 1686 and widely available in collections of Leibniz’s works.  Recount Leibniz’s reasons for disagreeing with Descartes.

 

17

Newton

(Matthews 137-39, 146-158)

 

   1.    Do a study of recent commentaries and papers on Newton’s Principia in order to come up with an full account of Newton’s objection that, were vortices responsible for moving the planets, their parts would have to move with two different speeds at once.  That is, explain why the parts would have to simultaneously move at a speed that is proportional to the square of their distance from the sun and the 3/2 of their distance from the sun, and explain what it is about Newton’s own account that resolves the puzzle.

   2.    Newton found a way of doing physics without talking about real causes (that is, about what it is that makes events in nature occur as and when they do) or about the nature of bodies (that is, about whether bodies are just solid, extended particles, or something less or something more, such as centers of repulsive or attractive force). Instead of talking about these things he simply talked about nomological causes (that is, about the laws in accord with one thing regularly happens after something else), and about generally observed behaviours of bodies (for example, about the fact that they all gravitate towards one another, or all push back against bodies that push on them).  But he did commit himself to at least one metaphysical thesis: the existence of absolute space.  An earlier question, in the Cartesian Science section, asked you to recount Newton’s argument for the existence of absolute space.  A further argument was later offered by the great German mathematician, Leonhard Euler, in his “Reflexions sur l’espace et le temps,” originally published in Memoires de l’academie des sciences de Berlin 4 (1748): 324-333, reprinted in the second volume of the third series of Euler’s Opera omnia, Andreas Speiser et. al. eds., (Geneva: Societatis Scientiarum Naturalium Helveticae, 1942), 376-383, and unfortunately, so far as I know, not available in translation.  Consult a copy of Euler’s paper and recount his argument.

 

17a

Newton

(Matthews 139-146)

 

   1.    Newton’s supposition of the existence of absolute space brought its own metaphysical difficulties with it.  One of the most brilliant statements of some of these difficulties is to be found in Notes F and G of the article on Zeno of Elea in Pierre Bayle’s Dictionnaire historique et critique (available in translation in Richard Popkin, ed., Historical and critical dictionary: selections [Indianapolis: Hackett, 1991]), 353-372.  Recount and assess Bayle’s case against the possibility of the existence of a real space.

   2.    Another critic of Newton’s account of absolute space and of his philosophy in general was Leibniz, who engaged in a critical correspondence with Samuel Clarke that is widely available in various independent editions and collections of Leibniz’s works (usually under the title of “the Leibniz-Clarke Correspondence”).  Study the correspondence and identify Leibniz’s main objections to Newton. Describe Leibniz’s alternative account of the nature of space and assess whether it is more plausible than Newton’s.

   3.    George Berkeley considered absolute space and time to be “abstract ideas” that have been invented by philosophers and that do not reflect anything that could possibly exist.  He was unpersuaded by Newton’s bucket experiment and attempted to respond to it both in his Principles of Human Knowledge 101-117 and in his De Motu 52-66.  Explain and assess Berkeley’s arguments.

 

 

18

Locke, Essay Epistle and I.i.1-4,6-8; I.ii.1-9,12,14-16; I.iii.1-6,9,22,24-25; I.iv.1-5,8-9,24-25

(Innate Ideas)

 

   1.    Locke’s definition of “idea” as “whatever it is, which the Mind can be employ’d about in thinking,” (Essay I.i.8) has long puzzled commentators.  According to one theory, Locke expressed himself so vaguely because he wanted to include both images formed by the imagination and concepts grasped by the intellect under the umbrella of the term, “idea.”  However, other commentators have criticized Locke’s definition for failing to provide adequate guidance on the question of whether ideas are acts whereby the mind thinks of an object or “third things” (in addition to the mind and the objects in the external world) that are produced in the mind as a consequence of the activity of objects.  These questions have recently been judiciously reviewed by Michael Ayers, Locke, 2 vols. (London: Rougledge, 1991), vol. 1, chs. 5-7.  Summarize and comment on Ayers’s position.

   2.    The main objection that Locke raised against innate knowledge in Essay I.ii-iii is that no good argument has been offered for supposing that there is any such thing.  However, Locke only ever considered one argument for innate knowledge: the argument from universal consent, and it might be objected that this is to attack a straw man, for there are better and more convincing arguments for innate knowledge.  Locke was attacked in just this way by Leibniz, who wrote an extended commentary on Locke’s Essay, the New essays on human understanding.  Leibniz’s New essays have been translated by Peter Remnant and Jonathan Bennett (Cambridge: Cambridge University Press, 1981).  Review Book I of Leibniz’s New essays (which comments on Book I of Locke’s Essay) and write a paper outlining Leibniz’s main objections to Locke.  Assess whether Leibniz or Locke has the better case.

 

19

Locke, Essay II.i.1-8,20,23-25; ii, viii.1-6, iii-vi; vii.1-2,7-10

(Sensation)

 

   1.    Critically assess Locke’s argument for empirism, as presented over Essay II.i.5-7, ii.2-3, iii.1 and III.iv.11.

   2.    In the mid-eighteenth century the French philosopher, Etienne Bonnot, Abbé de Condillac, argued that Locke had been too moderate in his empirism insofar as he had allowed that we might be innately capable of performing certain operations on our ideas and obtaining “ideas of reflection” from reflecting on those operations.  According to the argument of Condillac’s most famous work, the Treatise on sensations, we learn to perform all mental operations through having our attention focused in certain ways as a consequence of the experience of pleasure and pain.  Study Condillac’s work and explain whether his “sensationist” reply to Locke is ultimately successful.

   3.    Locke’s position on the distinction between body and space was a controversial one, and many philosophers in addition to Descartes found it difficult to accept.  He offered further arguments for it in a chapter specifically devoted to space, Essay II.xiii.  Some of the principal arguments against the possibility of empty space were articulated by Pierre Bayle in note I of the article on “Zeno of Elea” from his Historical and critical dictionary (Richard H. Popkin, trans. [Indianapolis: Hackett, 1991], pp.377-385), with specific reference to Locke’s inability to defend his position with anything more than objections to the contrary position.  Berkeley further amplified these arguments over Principles 110-117, and in a short, Latin treatise, De motu.  Assess the strength of Locke’s case for “penetrable, immovable, indivisible extension” in Essay II.xiii in light of the objections raised by Bayle and Berkeley.

 

20

Locke, Essay II.viii.7-26; ix.1-4,8-9; x.1-2; xi,1,4,6,8,9.15,17

(Primary and Secondary Qualities; Perception)

 

   1.    Critically assess Locke’s argument for inferring that our type (i) ideas must be resemblances of qualities in bodies.

   2.    Critically assess Locke’s arguments for inferring that our type (ii) ideas are not resemblances of any qualities actually inhering in bodies.

   3.    Locke’s claim that there is a distinction to be drawn between type (i) and type (ii) ideas was in part based on an appeal to the claim that type (ii) ideas are relative (the same water can feel warm to one hand but cold to the other) whereas our senses never give us conflicting information about the type (i) qualities of objects (no object ever feels like a globe to one hand but a cube to another    Essay II.viii.21). However, this claim seems obviously false in a number of cases (a pencil in a glass of water looks bent but feels straight, for example).  This is a point that was made by Bayle in note H of his Zeno article (to be read later in this class), by way of criticism of the Cartesian claim that a “blind impulse” leads us to think that material things are coloured, but a clear and distinct perception leads us to think that they must be extended.  However, it works just as well as a criticism of Locke, and both Berkeley (Principles 14-15) and Hume (Enquiry XII) used it as such.  Survey Bayle’s, Berkeley’s, and Hume’s statements of this objection and assess its adequacy.

   4.    Locke’s claim that there is a distinction to be drawn between type (i) and type (ii) ideas was also attacked by Berkeley (Principles 10, drawing on the argument of his Introduction to the Principles) on the grounds that it is impossible to form a type (i) idea without making use of a type (ii) idea.  This is because we cannot think of a figure without a boundary, and we cannot think of a boundary without employing contrasting qualities to mark its presence. Berkeley’s argument was later restated and improved upon by Hume (see his A treatise concerning human understanding, Book I, Part iv, Section 4).  Study Berkeley’s and Hume’s statements of this objection and determine whether Locke would have had any way of defending his position against it.

   5.    In his New essays on human understanding, Book II, Chapter 9, Section 8, Leibniz rejected Locke’s and Molyneux’s answer to the Molyneux question, writing that “the blind man whose sight is restored could distinguish [the cube and the sphere] by applying rational principles to the sensory knowledge he has already obtained by touch” (Remnant and Bennett, eds. [Cambridge: Cambridge University Press, 1981], p.136).  Outline the reasons Leibniz gave for his view and the qualifications he applied to his positive answer.  Assess whether Leibniz or Molyneux has the stronger case.

   6.    It has occasionally been charged that Locke’s negative answer to the Molyneux question is inconsistent with his own position on the distinction between type (i) and type (ii) ideas.  According to this objection, if type (i) are resemblances of qualities in bodies, then the newly sighted person ought, on first seeing a globe or a cube, to be able to suppose that the type (i) ideas they receive from vision resemble qualities actually existing in bodies, and relate that information to their tangible experience in order to be able to say which object is the globe and which the cube. This objection is not supported by the interpretation of Locke’s reasons for agreeing with Molyneux that was offered in the reading notes.  However, the issue is not clear-cut.  Accounts of Locke’s position on the Molyneux question can be found both in works on Locke (e.g., E.J. Lowe, Locke on human understanding [London: Routledge, 1995], p.58, and in works on the history of psychology and of the theory of vision (e.g., Michael Morgan, Molyneux’s question [Cambridge, Cambridge University Press: 1977]).  Consult some of these works and determine whether Locke’s negative answer to the Molyneux Question is consistent or inconsistent with his position on the resemblance of type (i) ideas to features of bodies.

   7.    Locke was not the only early modern philosopher to have problems accounting for the phenomenon of memory.  Do a comparative and critical survey of attempts to account for the phenomenon of remembering by major and minor figures in the seventeenth and eighteenth century.  Particularly worthy of study are, in addition to Locke, Condillac, Hume, Immanuel Kant, and Thomas Reid.

 

21

Locke, Essay II. xii; xiii.1-5; xxii.1-5,9; xxiii.1-11,15-20

(Substance)

   1.    Do a study of the correspondence between Locke and Stillingfleet on the topic of substance.  Outline the course of the correspondence and assess the quality of the arguments on either side.  Do a review of what other English critics of Locke’s views on substance were saying at this time.

   2.    In his exchanges with Stillingfleet (see Winkler, 341-45) Locke denied ever wanting to suggest that there is no such thing as substance or even ever wanting to suggest that our idea of substance arises simply from a sort of verbal illusion.  He claimed instead that the necessity of the existence of substance, and the consequent legitimacy of our idea, is proven by the fact that none of our simple ideas, including those of extension and solidity, can exist on their own.  As he put it at II.xxiii.4, “because we cannot conceive, how [the complication or collection of those several simple ideas of sensible qualities that we find united in things such as those we call horse or stone] should subsist alone, nor in one another, we suppose them existing in, and supported by some common subject.”  Was Locke right about this or might a critic object that a simple idea could very well exist on its own or that two simple ideas might mutually support one another’s existence without needing to inhere in some substance?  If he was not right, is there some other good reason for supposing that substance must exist? In answering these questions, consult the views expressed by Hume in Book I, Part iv, Sections 2-4 of his Treatise of human nature.

 

22

Locke, Essay II.xxi.1-5,7-11,13-15,22-25,29-33,40-48,51-53,56

(Power)

 

   1.    Was Locke able to successfully distinguish the power of freedom from that of volition?  Is his treatment of these notions ultimately coherent?

   2.    Does Locke’s account of volition differ from Descartes’s?  If so, how?  If not, what is the common position of the two on the nature of the will and what is the textual basis for attributing this position to each?

   3.    Assess the adequacy of Locke’s reasons for denying freedom of the will.

   4.    Was Locke ultimately able to reconcile determinism of the will with moral responsibility and blameworthiness?

   5.    Compare Locke’s and Hobbes’s views on the nature of the will and the possibility of freedom of the will.

 

23

Locke, Essay II.xxvii.1-14

(Identity)

 

   1.    Outline Locke’s theory of personal identity and then comment on whether phenomenon of false memory poses any problems for that theory. Supposing that someone can be convinced (say by a skillful police interrogator) that they remember committing a crime that they did not commit, would they in fact become guilty of that crime?

   2.    Outline Locke’s theory of personal identity and then comment on whether the phenomenon of the transitivity of identity poses problems for that theory.  We think that identity is transitive, that is, that if a=b and b=c then a=c.  But, to cite a case popularized by Thomas Reid, we can imagine a man who as a boy was beaten for stealing cherries, who as a young adult seized a standard in battle, and who as an old man is a general.  The general remembers seizing the standard, but not being beaten; the person who seized the standard remembers being beaten.  Yet Locke’s account seems to entail that while the general is the same person as the soldier who seized the standard, and the soldier is the same person as they boy who was beaten, the general is not the same person as the boy.

   3.    According to Locke’s theory of personal identity, a person who cannot remember having committed a crime cannot be considered guilty of that crime, even if the person happens to now inhabit the body that performed that crime.  This claim was challenged by Molyneux, who charged that we do take people who, say, get so drunk they cannot remember what they are doing and who then commit crimes to be responsible for those crimes.  Locke’s correspondence with Molyneux on this question is discussed by Henry Allison, “Locke’s Theory of Personal Identity,” in Ian Tipton, ed., Locke on human understanding (Oxford: Oxford University Press, 1977), P. Helm, Did Locke Capitulate to Molyneux?” Journal of the history of ideas 42 (1981): 469-477, and Henry Allison and Nicholas Jolley, “Locke’s Pyrrhic Victory,” Journal of the history of ideas 42 (1981): 672-74.  Survey this literature and comment on what it establishes.

   4.    Survey the recent philosophical literature on identity and personal identity.  Have recent philosophers improved significantly on Locke’s account and if so how?

 

24

Locke, Essay III.iii.1-4,6-13,15-18; vi.1-9,12,14-19,23,25-26,28

(Abstract Ideas, Essence)

 

   1.    In the Introduction to his Principles of human knowledge of 1710, George Berkeley attacked Locke’s account of abstract ideas.  Study Berkeley’s critique of Locke and write a summary of his main objections. Are the objections fair?  Could Locke respond to them?  What is Berkeley’s alternative position on the meaning of general terms?  Might equally (or more) serious objections be leveled against Berkeley’s own account?

   2.    For Locke, the meaning of a word is the idea it is used to name. Ideas are also private mental  occurrences, known only by the person who has them.  This means that everyone’s language is private, the words in it being used to refer to things that only that person knows.  The intelligibility of a private language was famously attacked by Ludwig Wittgenstein, Philosophical investigations (Oxford: Blackwell, 1953), p.269ff.  Recount Wittgenstein’s argument and determine (i) whether Locke’s account of language is ultimately a “private language” account or rather an account that recognizes that meaning is ultimately determined by factors external to the individual’s mental states, and (ii) whether Locke’s account can be defended against Wittgenstein’s attack.

   3.    At the outset of the Investigations Wittgenstein attacked the traditional Lockeian account of classification on the basis of observed similarities and proposed an alternative account of how it is that we group things like dogs together by appeal to the notions of a language game and of family resemblance.  Outline Wittgenstein’s account and determine whether it is superior to Locke’s.  Does Locke’s view that we might classify objects on the basis of their tertiary qualities or powers provide him with a way of evading Wittgenstein’s criticisms of the traditional account?

   4.    Has Locke’s conventionalism about real essences been refuted by modern chemistry?  (That is, do modern definitions of the elements in terms of the numbers of protons in their nuclei constitute definitions in terms of “real essences” that are not merely conventional, but grounded in nature?)  In giving your answer, you should consult the discussion of this issue in Michael Ayers, Locke, epistemology and ontology, 2 vols. (London: Routledge, 1991), vol. II, ch. 7, pp. 78-90, drawing on earlier work by Saul Kripke, “Naming and Necessity,” in Donald Davidson and Gilbert Harman, eds., Semantics of natural language (Dordrecht, 1972), and Hilary Putnam, Philosophical papers II: mind, language and reality (Cambridge: Cambridge University Press, 1975).

 

25

Locke, Essay IV.i; ii.1-7,14; iii.1-14,17-18,21

(Knowledge)

 

   1.    According to Locke, all ideas arise from experience.  But not all relations between ideas are known by experience, that is, by having an experience in which two or more ideas are simultaneously presented and exhibited as standing in a certain relation to one another.  Some relations between ideas are discerned by remembering the related ideas, comparing them with one another, and “intuiting” that they stand in a certain relation, without ever having had an experience where all the related ideas are simultaneously presented.  It is for this reason that Lockeian “intuitive” knowledge has been considered to be a form of “a priori” knowledge.  (A priori knowledge is knowledge obtained independently of experience    in this case, knowledge of a relation between two things obtained independently of having experienced those two things together.)  A priori knowledge is controversial.  Many have doubted that there could be such a thing, and those who accept it are not agreed on what makes it possible.  Do a survey of recent work on what makes a priori knowledge possible.  Might any of the recently advocated positions on a priori knowledge be read back into Locke?

   2.    It has been charged that Locke’s view of intuition involves a commitment to innate knowledge of just the sort that he proposed to reject in Book I of the Essay.  According to this objection, our ability to simply intuit that there is a relation between certain ideas is a function of our innate constitution.  Some propositions, such as that cubes have six faces, may appear intuitively obvious to us, but not to other creatures, and things that we are only able to know through a complicated demonstration, such as that there are only five Platonic solids, may be intuitively obvious to others beings.  Worse, some of our intuitions may be deceptive.  Do a survey of recent work on Locke’s account of intuition and assess the strength of this objection in light of how recent commentators on Locke have dealt with it.

   3.    The difficulties created by our need to rely on memory in giving demonstrations are among the reasons that motivated Hume to declare that the conclusions of a demonstration are merely probable and so cannot constitute knowledge.  In Book I, Part iv, Section 1 of his Treatise of human nature Hume appealed to this fact to mount a notorious argument against reasoning.  Outline Hume’s argument and assess its adequacy.

   4.    One problem with Locke’s account of demonstration is that it breaks down in cases where ideas stand in intransitive relations to one another.  (A transitive relation has the following property: for any three things, A, B, and C, if A stands in the relation to B, and B stands in the relation to C, then A stands in the relation to C. Equality is such a relation.)  For example, I can intuit that A closely resembles B and that B closely resembles C, but I might be wrong to take this to constitute a demonstration that A must closely resemble C.  How might Locke have dealt with this problem?

   5.    Assess the adequacy of Locke’s attempt to prove that sensation gives us knowledge (as opposed to mere belief) in the existence of external objects.  (Consider what he has to say on this topic in Essay IV.xi as well as IV.ii.14.)  Has he even established that sensation gives us belief?

Identify and study the main contributions to the late 17th and early 18th century English debate over thinking matter.  Identify the most compelling arguments formulated for and against the possibility that matter might think.  Note that Locke adopted something of a half-way position on this debate insofar as he maintained that thought could not originally pertain to matter, though it could be added to it by an act of God (see, for instance, Essay IV.x.10).  Determine whether Locke’s half-way position is at all consistent.

 

26

Locke, Essay IV.iv.1-12; ix.2-3; x.1-7; xi

(Knowledge of Real Existence)

 

   1.    Locke’s claim that it is intuitively evident that every event must have a cause was attacked by Hume in Book I, Part iii, Chapter 3 of his Treatise concerning human understanding.  Recount and assess Hume’s argument.

   2.    It is surprisingly difficult to prove that there are other minds. Survey some of the recent literature on this topic and explain why the standard arguments for this conclusion have proven to be less than convincing.

   3.    Locke maintained that while we cannot know that objects continue to exist while not perceived, we can have grounds to believe that this is the case.  Hume followed Locke in this respect, but unlike Locke he did not think that we have good or reasonable grounds to believe that objects continue to exist unperceived; instead, our belief is a fiction of the imagination, based on certain propensities that, in other circumstances, are condemned by philosophers and logicians as producing fallacious opinions.  Hume’s argument for this startling conclusion is offered over Treatise I.iv.2.  Recount this argument, giving particular attention both to why Hume said that the belief in the unperceived existence of bodies is not based on any good reason, and what he identified as the illegitimate operations of the imagination that cause us to have this belief anyway.

 

27

Locke, Essay IV.xiv-xv; xvi.1,3-14

(Probability)

 

   1.    In Essay II.xxxiii, entitled “Of the Association of Ideas,” Locke identified “custom,” i.e., the past experience of a regularity in how ideas are conjoined, as a “degree of madness” and a “disorder of the mind” which exerts a baleful influence on our intellectual habits.  But in Essay IV.xvi he treated “analogy to our own or other’s experience” as an important determinant of the degree of confidence or assurance we ought to place in a belief.  Study these chapters and determine whether there is a contradiction in Locke’s account.  (Thanks to Ted Morris for suggesting this problem.)

 

28

Locke, Essay IV.xviii.1-10; xix

(Reason, Faith, and Enthusiasm)

 

   1.    Enthusiasm was much discussed by writers on philosophy and religion in the early modern period, when it was employed as a technical term with specific, and generally pejorative connotations that are no longer present in modern usage.  However different writers, e.g., Locke, Shaftesbury, Hume, understood enthusiasm in importantly different ways. Undertake a comparative study of how these and other writers in the period understood “enthusiasm.”

 

29

Bayle

Dictionnaire, “Pyrrho B”

 

   1.    Was Bayle right that no good argument can be found for treating the primary qualities differently from the sensible qualities?

   2.    Might Locke’s account of personal identity to used to offer a reply to Bayle’s argument for scepticism regarding my own past existence?

   3.    To what extent, if any, might Locke’s account of personal identity be used to offer a reply to Bayle’s attack on the rationality of the Christian mysteries?

   4.    Only three of Bayle’s five appeals to metaphysical Christian mysteries (the first, third, and fourth) were discussed in the notes. Give an account of his point in the remaining ones, informed by a study of 17th century views on the nature of the Trinity and Transsubstantiation.

   5.    One of the most notorious responses to the view that the Christian mysteries are irrational was offered by a group of English thinkers collectively referred to as the Deists.  Notable figures in this group include Herbert of Cherbury, John Toland, Anthony Collins, Matthew Tindal, and Lord Bolingbroke.  The Deists claimed that if the mysteries were irrational then they should be rejected and they strived to formulate and justify a religion stripped of all mysterious elements. Do a study of the principal Deist tracts and determine to what extent Locke might be considered to be a member of their group.

 

30

Berkeley, Principles, Introduction

(Abstract Ideas)

 

   1.    Did Berkeley understand Locke’s position on abstract ideas correctly?

   2.    Does Berkeley’s rejection of abstract ideas rest on the supposition that ideas are pictures?  Is there another way of understanding what ideas are that would evade his argument against forming abstract ideas?

   3.    Is Berkeley’s account of the meaning of general terms cogent or was he unable to adequately explain how we come to views different things as all belonging to the same group?

 

31

Berkeley, Principles 1-24

(Immaterialism)

 

   1.    Was Berkeley ultimately successful in his attempt to answer the objection that ideas are acts of perceiving and not mental objects?  In addressing this question consider what he had to say about the act/object distinction in the first part of his Three dialogues between Hylas and Philonous as well as Principles 49.  Note that there is also a large body of secondary literature on this question.  Consult some of the most recent of those discussions in giving your assessment.

   2.    Was Berkeley right to claim that nothing can be like an idea but another idea?

   3.    Was Berkeley right to reject the distinction between primary and secondary qualities?

   4.    Review some of the recent literature on Berkeley’s master argument and comment on whether that literature has demonstrated that the master argument rests on a fallacy.

 

32

Berkeley Principles 25-33, 135-156

(Realism)

 

   1.    As described in the notes on the reading, Berkeley’s doctrine of notions raises a number of difficult questions about what it means for an idea or a notion to represent an object and about whether Berkeley is within his rights to treat our knowledge of ourselves so differently from our knowledge of sensible things.  Berkeley struggled with these questions in the third part of his Dialogues between Hylas and Philonous.  Do a study of this work and of the recent secondary literature on it and assess the adequacy of his answers.

   2.    Berkeley’s argument for the existence of an immaterial self rests on the claim that ideas cannot exist apart from being perceived, so that the existence of ideas implies the existence of a perceiver.  This claim was challenged by Hume, in Book 1, Part 4, Section 6 of his Treatise of human nature, though Hume himself came to have misgivings about this challenge, which were laid out in his appendix to that work.  Assess the cogency of Hume’s reasons for rejecting Berkeley’s principle, particularly in the light of his own later reservations.

 

33

Hume, Enquiry IV

(Sceptical doubts about our powers of knowledge)

 

   1.    Hume’s distinction between relations of ideas and matters of fact has been heralded as one of the first statements of what was later to emerge as the analytic/synthetic distinction.  However, Hume’s distinction, which is based on appeal to intuitively obvious relations between ideas, is importantly distinct from later versions of the distinction, which involve appeals to definitions of terms and the analysis of concepts.  Arguably, Hume’s “relations of ideas” include things that other philosophers would have identified as “synthetic a priori” or even purely empirical truths (e.g., “orange is more like red than like green”).  Do a more detailed study of differences between Hume’s account of the distinction between relations of ideas and matters of fact and more recent formulations of an analytic/synthetic distinction.

   2.    Hume’s charge that there is no rational justification for causal inference continues to be hotly debated today.  Do a study of the current debate and determine how well Hume’s position has stood up to criticism.

 

34

Hume Enquiry V.i, IX

(Naturalism)

 

   1.    In Section X of the Enquiry Hume seems to have wanted to condemn those who believe in miracles on the basis of the testimony of others. Yet in Section V.i of the Enquiry he claimed that belief we form in anything we have not ourselves observed is “the necessary result of placing the mind in [particular] circumstances” (e.g., the circumstances of hearing testimony to the occurrence of miracles), and that it is “an operation of the soul, when we are so situated, as unavoidable as to feel the passion of love, when we receive benefits; or hatred, when we meet with injuries,” and that it is “a species of natural instincts, which no reasoning or process of the thought and understanding is able, either to produce, or to prevent.”  But it is a maxim that no one ought to be blamed for doing something they were necessitated to do, and that no one ought to be criticized for forming beliefs which they could not have altered by any reasoning or process of the thought and understanding.  Was Hume therefore being inconsistent when he condemned those who believe in miracles?  Does his account of belief in unperceived existence imply that no one has any right to criticize anyone else for any belief that they might form in matters of fact neither of them has observed?

 

35

Hume, Enquiry II-III, V.ii

(Belief)

 

   1.    Was Hume right to claim that the difference between impressions and ideas (as well as the nature of belief) consists in the force and vivacity of the sentiment involved in having the experience?  In considering this question, note that Hume himself expressed some ambivalence about this matter in both the Appendix and the Abstract to his earlier Treatise of human nature.  Note also that Hume’s view was sharply criticized by Reid, who maintained that the difference between a sensation of pain and a memory or idea of pain is one of kind and not one of degree of vivacity.  On Reid’s view, to remember or have an idea is to perform an act whereby one thinks of some past sensation (so that the past sensation is, as it were, the intentional object of the act of thought), whereas to actually have a pain is not to think of anything but to simply be a certain way (to be in pain).  Hume’s Abstract and Appendix to his Treatise are to be found in all good editions of the Treatise. Reid’s views can be found in his Inquiry into the human mind, Chapter 2, sections 3-5 and Chapter 6, section 20, as well as in his Essays on the intellectual powers, Essay II, sections 1-5, 12, 16, Essay III, sections 1-2, and Essay IV, sections 1-3.

   2.    Hume’s claim that all ideas are copies of impressions is constitutive of his particular brand of empiricism.  His arguments for this claim have frequently been criticized as inadequate.  A good survey of some of the problems that have been raised on this score has been provided by Don Garrett, Cognition and commitment (Oxford: Oxford University Press, 1997), Chapter 2.  Starting from this source and consulting more recent literature, determine what can be said against and on behalf of Hume’s empiricism.

   3.    As Tom Beauchamp has observed in the introduction to his edition of Hume’s Enquiry, there are some who believe that Hume’s remarks in Enquiry II concerning the missing shade of blue undermine his empiricism.  Do a survey of the recent literature on the “missing shade of blue” and determine whether this charge is justified.

 

36

Hume Enquiry VI

(Probability; Necessary Connection)

 

   1.    According to Hume, our belief in an outcome is stronger or weaker depending on the number of times that outcome has been observed in the total number of trials.  In the Enquiry Hume attributed the fact that our belief is stronger or weaker in this way to “an inexplicable contrivance of nature.”  However, in his earlier Treatise of human nature he offered a very detailed explanation of how the belief arises.  How can he have said something is inexplicable in one work, when he had himself explained it in another?  Did Hume change his mind about the soundness of his earlier explanation?  If so, why did he continue to invoke it to the extent that he did in Enquiry X?

   2.    It has often been charged that Hume’s account of causality is defective insofar as it treats causes as nothing more than events that regularly precede certain other events and denies that they have any productive power.  According to authors of this objection, Hume’s account confuses accidental correlations with causes.  Just prior to crossing a road, a train blows its whistle.  But though a whistle blow regularly occurs prior to a train crossing the road, we do not think that the former event is the cause of the latter.  It does, however, seem to satisfy Hume’s definition of “cause.”  Consider whether this objection is a good one, in the light of some of the recent literature discussing Hume’s views on causality.

   3.    Do a survey of the recent literature on Hume’s two definitions of cause.  Critically assess the positions taken by recent scholars on this issue in comparison to the position taken in the notes.

 

 

37

Hume, Enquiry VIII

(Liberty & Necessity)

 

   1.    Hume claimed that “the conjunction between motives and voluntary actions is as regular and uniform, as that between the cause and effect in any part of nature.”  He claimed, further, that “this regular conjunction has been universally acknowledged … and has never been the subject of dispute, either in philosophy or common life.”  Identify his reasons for making this claim and assess their strength.

   2.    Hume claimed that the notion of liberty only makes sense if it is understood as the ability to act or not act according to how one is motivated.  Is it true that there is no other way to make sense of the term?

   3.    Hume claimed that, considered in themselves, actions are morally indifferent and are only made good or bad by a consideration of the reasons people have for performing them.  Was he right about this?  Supposing he was, was he right to draw the conclusion that this means that actions cannot be morally good or bad unless they are determined by motives?  Would he have an adequate response to someone who said that what makes actions good or bad is not that they are determined by good or bad motives, but that the person who performs them always has some motives to act one way and other motives to act the opposite way and freely chooses to act on the one sort of motive rather than the other?

   4.    Hume claimed that we are forced by our nature to feel sentiments of moral approbation and disapproval when we contemplate characters, dispositions, and actions, that are useful or harmful to selves or society, and that we will feel these sentiments whether or not we think the people involved were determined to have the characters and dispositions they have.  But we also think that it is illegitimate to blame people for things they were forced to do and could not avoid, even if we are psychologically compelled to do so.  Is any legitimate praise or blame of people still possible if Hume is right?  Are praise and blame, or rewards and punishments, still legitimate?

   5.    Compare the views of Hobbes, Locke, and Hume on the freedom of the will.

 

38

Hume, Enquiry X

(Miracles)

 

   1.    In Enquiry V Hume claimed that belief has natural causes that are outside of anyone’s control.  As he put it, “belief is the necessary result of placing the mind in [certain] circumstances.  It is an operation of the soul, when we are so situated, as unavoidable as to feel the passion of love, when we receive benefits; or hatred, when we meet with injuries.  All these operations are a species of natural instincts, which no reasoning or process of the thought and understanding is able, either to produce, or to prevent” (Enquiry 5.8) But if belief cannot be produced by reasoning, how can Hume claim that certain beliefs are unreasonable, as he appears to do in the essay on miracles, when he condemns those who believe in miracles?  And how can he justly condemn these people for their beliefs if no one has any control over what they believe, and all of us are irresistibly compelled by our circumstances to believe what we do?

   2.    In Enquiry 10.36-37: Steinberg p.88-89, Hume described two cases, one of a supposed darkness over the earth for eight days, the other of the resurrection of Queen Elizabeth.  He claimed that the former could be believed, but the latter could not.  What is the difference between these cases that would justify treating them differently?  What, exactly, was Hume’s point in even discussing them?

   3.    It has frequently been objected that Hume’s argument against miracles unfairly “double counts” the evidence against testimony.  According to this objection, the likelihood of the occurrence of the event being reported is just one factor involved in the assessment of the reliability of testimony.  We also consider the number of witnesses, their interest in the case, the likelihood they could have been deceived, and so on.  But rather than weigh the intrinsic likelihood of the event being reported along with all of these other factors, Hume made it a distinct factor, of equal weight on its own with all the other considerations combined.  In effect, he considered 50% of the credibility of testimony to come from the intrinsic likelihood of the event, and the remaining 50% to be due to the credibility of the witnesses.  (This is what is implied by his claim that the most credible witness could not do any more than counterbalance our intrinsic disbelief in the occurrence of an event that violates a law of nature, and so lead us to a suspension of belief on either side.)  But it just does not follow that the intrinsic likelihood of the event ought to be ascribed so much weight.  Review and assess the recent literature discussing this objection.

 

39

Hume, Enquiry XII

(Scepticism)

 

   1.    Critically assess Hume’s reasons for denying that our senses give us knowledge of an external world.

   2.    In Part I of his Dialogues on natural religion Hume has one of his characters, Cleanthes, reproach another, Philo, for maintaining that we ought to limit ourselves to matters of everyday life and common experience, and not attempt to engage in distant and remote inquires concerning whether the world had a divine cause or whether there will be a final judgment.  Cleanthes’s charge was that, if we refrain from inquiries of this sort, then by parity of argument we ought to refrain from doing theoretical physics, chemistry, or biology, since in all of these sciences we carry our researches far beyond the bounds of everyday experience.  Does Hume have a way of replying to this objection?  Can he allow for the validity of scientific inferences concerning small or remote things, or things in the distant past or future, while denying that we have any justification for drawing inferences from the evidence of design in nature to the existence of a designer, or from the apparent goodness of creation to the creator’s determination to institute a just distribution of rewards and punishments in an afterlife?