Descartes, Boyle and Hooke shared, with many other seventeenth-century figures, the view that mechanical explanations were the only intellectually satisfactory ones. They also all accepted the view that we have incorporeal souls. This generated a problem for them when they wrote about perception. In this area, indeed, Descartes seems to be almost a reluctant Cartesian. When we read his scientific writings, the incorporeal soul is not stressed, and Descartes happily speaks of physical, or of corporeal, ideas in discussing sensation, memory (...) and imagination. (shrink)

To be able to believe that a dog with a broken paw is not really in pain when it whimpers is a quite extraordinary achievement even for a philosopher. Yet according to the standard interpretaion, this is just what Descartes did believe. He held, we are informed, the ‘monstrous’ thesis that ‘animals are without feeling or awareness of any kind’. The Standard view has been reiterated in a recent collection on animal rights, which casts Descartes as the villain of the (...) piece for his alleged view that animals merely behave ‘ as if they feel pain when they are, say, kicked or stabbed’. The basis for this widely accepted interpretation is Descartes' famous doctrine of ‘animal machine’ ; a doctrine that one critic condemns as ‘a grim fortaste of a mechanically minded age’ which ‘brutally violates the old kindly fellowship of living things’. (shrink)

Many philosophers have appealed to the PSR in arguments for a being that exists a se, a being whose explanation is in itself. But what does it mean, exactly, for something to have its explanation ‘in itself’? Contemporary philosophers have said next to nothing about this, relying instead on phrases plucked from the accounts of various historical figures. In this article, I analyse five such accounts – those of Anselm, Aquinas, Descartes, Spinoza, and Leibniz – and argue that none are (...) satisfactory. Should we abandon or restrict the PSR, then? I think that would be hasty, for many reasons. I therefore consider the prospects of explaining everything, including God, given the constraints of certain features of good explanations, and conclude with several observations about future approaches. (shrink)

It is a standing temptation for philosophers to find anticipations of their own views in the great thinkers of the past, but few have been so bold in the search for precursors, and so utterly mistaken, as Berkeley when he claimed Plato and Aristotle as allies to his immaterialist idealism. InSiris: A Chain of Philosophical Reflexions and Inquiries Concerning the Virtues of Tar-Water, which Berkeley published in his old age in 1744, he reviews the leading philosophies of antiquity and finds (...) them on the whole a good deal more sympathetic to his own ideas than the ‘modern atheism’, as he calls it, of Hobbes and Spinoza or the objectionable principles of ‘the mechanic and geometrical philosophers’ such as Newton. But his strongest and, I think, his most interesting claim is that neither Plato nor Aristotle admitted ‘an absolute actual existence of sensible or corporeal things’. (shrink)

It is a standing temptation for philosophers to find anticipations of their own views in the great thinkers of the past, but few have been so bold in the search for precursors, and so utterly mistaken, as Berkeley when he claimed Plato and Aristotle as allies to his immaterialist idealism. InSiris: A Chain of Philosophical Reflexions and Inquiries Concerning the Virtues of Tar-Water, which Berkeley published in his old age in 1744, he reviews the leading philosophies of antiquity and finds (...) them on the whole a good deal more sympathetic to his own ideas than the ‘modern atheism’, as he calls it, of Hobbes and Spinoza or the objectionable principles of ‘the mechanic and geometrical philosophers’ such as Newton. But his strongest and, I think, his most interesting claim is that neither Plato nor Aristotle admitted ‘an absolute actual existence of sensible or corporeal things’. (shrink)

The purpose of this paper is to show that the ‘simple natures’ which appear in the Regulae are those very ‘modes’ and ‘attributes’ of ‘substance’ which appear in all of Descartes’ later works. Contrary to the opinions of some critics, I hope to show that simple natures were not discarded by Descartes for being inconsistent with his later philosophy; that is, if they were discarded at all! I also hope to show that simple natures do not have such a “wide (...) berth” that they are inadequate in dealing with Descartes’ “mature philosophy”. On the contrary, I hope to make it sufficiently clear that they are indispensable for our understanding of the relationship between his epistemology and ontology.Descartes’ account of ‘simple natures’ is of utmost importance to his epistemology. His account of ‘substance’ constitutes the very essence of his ontology. We shall see that while ‘simple natures’ are all we can know, ‘ substance’ is all that exists. Hence the relationship of simple natures to substance should aid us in understanding the relationship of thought to being. This relationship serves to illustrate the correspondence between knowledge and existence which is the hallmark of Cartesian thought. (shrink)

Descartes's greatest glory was to be the first to articulate, and systematically to defend, the new scientific ideal of explanation in terms of lawfulness. For the realm of matter, lawful connections replaced anthropomorphic volitions as the model of rational explanation. Descartes's use of explanation in terms of lawfulness, inspired by Galileo's beginnings in this enterprise, was vindicated by Newton's subsequent achievement. Replacement of anthropomorphic agency, by causal mechanism, as the explanatory model, was undoubtedly the most profound of the many effects (...) of the new science on our culture. (shrink)

In this article, we will consider how far we might be said to be active in forming our beliefs; in particular, we will ask to what extent we can be said to be free in believing what we want to believe. It is clear that we ought to believe only what is really so, at least in so far as it lies in our power to determine this, but reflection shows that, regrettably, we do not confine our beliefs to what (...) we have evidence for, nor do we always believe in accordance with the evidence we do have. So it is natural to conclude that non-intellectual factors may be at work here; such, at least, was the view of Descartes, who attributed error to the influence of our will in leading us to assent to judgments which go beyond the evidence presented by our infallible intellect. This view has some initial plausibility when we think of cases in which emotional considerations lead people to take up and genuinely believe things they have no evidence for, but it is not a view which has received much support from modern philosophers. So, in Part 1 we will look at criticisms levelled against Descartes' view by J. L. Evans, and in Part 2 we will see how far Descartes can be defended. Our conclusions here will lead us to give in Part 3 a general account of the influence of the will in beliefs. We will suggest that we are always responsible for our explicit beliefs, even though it is not true that we can simply believe what we like. Thus we will reject the idea that a man can consciously know something, and at the same time, by will power, believe the opposite. Belief is not then totally free, but we will argue that people do sometimes form beliefs which go against what they should and could believe, and that this can in a way be put down to the influence of the will. Finally we will consider some of the ways in which it is possible to influence our beliefs by willed acts over a long period of time, though this is not the way that we clami that the will might be said to play a part in every judgment that we make. (shrink)

For any normative domain, we can theorize about what is good in that domain. Such theories include utilitarianism, a view about what is good morally. But there are many domains other than the moral; these include the prudential, the aesthetic, and the intellectual or epistemic. In this last domain, it is good to be knowledgeable and bad to ignore evidence, quite apart from the morality, prudence, and aesthetics of these things. This dissertation builds a theory that stands to the epistemic (...) domain as utilitarianism stands to the moral domain. It builds an epistemic value theory. (shrink)

Early in the Second Meditation Descartes has found grounds to doubt his previous opinions, and following his resolve to reject as false anything not entirely indubitable, he rejects these opinions. He then asks whether there might remain something impervious to doubt that he has not yet considered. One item as yet unconsidered is his own existence:I myself, am I not at least something? But I have already denied that I had senses and body. Yet I hesitate, for what follows from (...) that? Am I so dependent on body and senses that I cannot exist without these? But I was persuaded that there was nothing in all the world, that there was no heaven, no earth, that there were no minds, nor any bodies: was I not then likewise persuaded that I did not exist? (shrink)

Just As it is, I believe, a legitimate philosophical enterprise to engage in a “rational reconstruction” of some term or concept in ordinary language, which will, although similar in many ways to the original concept, be a better concept than the original, in that it will, among other things, be free of ambiguities, vagueness and philosophically irrelevant associations of the parent concept, so there is, I believe, a similar enterprise in the history of philosophy. Here, it is legitimate to reconstruct (...) a philosopher's views about some matter the philosopher has written on in such a way as to defend it from certain criticisms so long as the reconstruction remains faithful to the main thrust of the views in question. In particular this is so when the philosopher is acknowledged to be a very great and influential one, and if the criticisms, were they correct, would be inconsistent with the philosopher's acknowledged greatness. The defence of the philosopher from such criticisms is even more legitimate if it can be shown that although the philosopher has written in places in a way that makes the criticism in question seem correct, he has written elsewhere in a way which makes the criticism seem mistaken. (shrink)

The idea of self-knowledge divides naturally into two parts in accordance with the distinction between knowledge by acquaintance and knowledge by description. I know myself and I know things about myself. The latter I know partly from self-acquaintance, partly from the behavior, especially linguistic, of others, and partly from each of these. All aspects of self-knowledge are controversial, so I shall concentrate in this paper on the question of self-acquaintance. My purpose is both philosophical and historical. It is commonly believed (...) that Hume and Descartes held diametrically opposed, or at least strongly contrasting, views regarding self-acquaintance since Hume is regularly ridiculed for his denial of ability to discover his own Self whereas it would occur to no one to ascribe that same view to the author of the Meditations. In this paper I shall argue that contrary to appearances these two philosophers either held the same position or Descartes occupied the more agnostic extreme; and also that the position usually ascribed to Hume is, when properly understood, both correct and of fundamental philosophical significance. Part of my reason for selecting Hume and Descartes for analysis and comparison is to show thereby that the thesis of this paper is true independently of the rationalist/empiricist schism in philosophy. (shrink)

Hume maintained that “since all actions and sensations of the mind are known to us by consciousness, they must necessarily appear in every particular what they are, and be what they appear.” Descartes maintained a very similar doctrine, and Locke and Berkeley held at least part of the doctrine. I shall not try to set out precisely what any of these philosophers thought about self-knowledge; I cite them simply as proponents of the general view which I shall be examining in (...) this paper: namely, that each of us has a special epistemic authority about his own mental life. This view is still widely held, particularly in the form of the thesis that one's sincere avowals of current mental states are incorrigible, i.e., such that, necessarily, no one ever has overriding reason to think them false. (shrink)

The problem of the Cartesian Circle has been with us ever since the publication of the Meditations. This is quite remarkable, since the error of circularity which Descartes is accused of having committed is not a subtle one but is, if there is such an error, a gigantic blunder which is not difficult to discover, which was pointed out to Descartes shortly after the Meditations appeared, and which completely undermines Descartes’ primary project, the establishment of sure and certain knowledge. It (...) is incredible that Descartes, a slow and careful thinker with considerable philosophical talent, could have made such an obvious and egregious error. It is much more plausible that there really is no circularity in Descartes’ argument, and that the charges of circularity grow out of a misunderstanding of Descartes’ intention or of the way in which his argument progresses.The incredible, of course, is possible, and I am not proposing that the question of the circle be resolved merely by dismissing it, nor am I suggesting that the text be ignored in order to force consistency onto Descartes’ thought. (shrink)