….it [is] wholly irrational to regard as doubtful matters that are perceived clearly and distinctly by the understanding in its purity, on account of mere prejudices of the senses and hypotheses in which there is an element of the unknown.Descartes, Geometrical Exposition of the MeditationsSubstance dualism, once a main preoccupation of Western metaphysics, has fallen strangely out of view; today’s mental/physical dualisms are dualisms of fact, property, or event. So if someone claims to find a difference between minds and bodies (...) per se, it is not initially clear what he is maintaining. Maybe this is because one no longer recognizes ‘minds’ as entities in their own right, or ‘substances.’ However, selves - the things we refer to by use of ‘I’ - are surely substances, and it does little violence to the intention behind mind/body dualism to interpret it as a dualism of bodies and selves. If the substance dualist’s meaning remains obscure, that is because it can mean several different things to say that selves are not bodies. (shrink)

In this paper, I provide what I believe to be Descartes's own solution to the problem of the Cartesian Circle. As I argue, Descartes thinks he can have certain knowledge of the premises of the Third Meditation proof of God's existence and veracity (i.e., the 3M-Proof) without presupposing God's existence. The key, as Broughton (1984) once argued, is that the premises of the 3M-Proof are knowable by the natural light. The major objection to this "natural light" gambit is that Descartes (...) identifies the natural light with the faculty of clear and distinct perception, a faculty that cannot be known to be reliable in advance of the 3M-Proof. I explain that Descartes distinguishes between three kinds of clear and distinction perceptions depending on their source; the senses, the imagination, or the intellect. I claim that although the First Meditation is designed to cast doubt on the clear and distinct perceptions of the senses and of the imagination, it is not designed to cast doubt on the clear and distinct perceptions of the intellect. The "natural light" gambit relies on the assumption that the natural light, by which propositions can be certainly known without presupposing knowledge of God's existence, is to be identified with the faculty of *intellectual* clear and distinct perception. (shrink)

We offer a novel interpretation of the argumentative role that Meditation IV plays within the whole of the Meditations. This new interpretation clarifies several otherwise head-scratching claims that Descartes makes about Meditation IV, and it fully exonerates the Fourth Meditation from either raising or exacerbating Descartes’ circularity problems.

This paper explicates Descartes’ theory of intuition (intuitus). Departing from certain commentators, I argue that intuition, for Descartes, is a form of clear and distinct intellectual perception. Because it is clear and distinct, it is indubitable, infallible, and provides a grade of certain knowledge he calls ‘cognitio’. I pay special attention to why he treats intuition as a form of perception, and what he means when he says it is ‘clear and distinct’. Finally, I situate his view in relation to (...) those of his Scholastic predecessors on one hand and current theories on the other. His view anticipates the contemporary ‘perceptual model of intuition’, though it is much bolder with its promise of certainty. (shrink)

This paper explicates Descartes’ theory of intuition (intuitus). Departing from certain commentators, I argue that intuition, for Descartes, is a form of clear and distinct intellectual perception. Because it is clear and distinct, it is indubitable, infallible, and provides a grade of certain knowledge he calls ‘cognitio’. I pay special attention to why he treats intuition as a form of perception, and what he means when he says it is ‘clear and distinct’. Finally, I situate his view in relation to (...) those of his Scholastic predecessors on one hand and current theories on the other. His view anticipates the contemporary ‘perceptual model of intuition’, though it is much bolder with its promise of certainty. (shrink)

Znaczenie epistemiczne aktualnie jasnych i wyraźnych ujęć w epistemologii Kartezjusza W niniejszym artykule omawiam kwestię dotyczącą roli, jaką Kartezjusz wyznaczył w budowie gmachu wiedzy pewnej temu, co można określić mianem aktualnie jasnych i wyraźnych ujęć. Powyższa kwestia jest od dawna przedmiotem ożywionej dyskusji wśród komentatorów epistemologii Kartezjusza. W współczesnej literaturze historyczno-filozoficznej spotkać można dwie zasadnicze interpretacje na temat funkcji jaką pełnią w systemie Kartezjusza aktualnie jasne i wyraźne ujęcia. Pierwszą można nazwać interpretacją psychologiczną, drugą zaś normatywną. Ta ostatnia głosi, że (...) aktualnie jasne i wyraźne ujęcia są całkowicie odporne na wątpienie zanim jeszcze dowiedzie się istnienia Boga i ustali ogólną regułę prawdy. Z tego względu ich pewność nie ogranicza się u Kartezjusza jedynie do pewności psychologicznej, lecz ma charakter normatywny. Opowiadam się za interpretacją normatywną. Przemawiają za nią – moim zdaniem – liczne racje. Ale rodzi ona także pewne trudności. Dlatego po przedstawieniu argumentów przemawiających na jej rzecz i niewątpliwych zalet wynikających z jej przyjęcia, omawiam szczegółowo pewne trudności zarówno tekstowe, jak i merytoryczne, którym musi sprostać ta interpretacja, jeśli mamy ją utrzymać. (shrink)

Did Descartes manage to overcome the skeptics? If we understand “overcome” in the sense of “refute,” the answer is no, since his hyperbolic doubt harbors several blind spots and is, therefore, not as radical as is commonly argued. In this way, the victory of the cogito is perhaps less decisive and fruitful than it is claimed. If we understand “overcome” in the sense of “remove” or “move beyond,” the answer is yes. Descartes has overcome skepticism, but at the cost of (...) a decision, a sort of bet made in favor of reason based on a confidence in the human mind that is never really subverted. This faith in reason, truth, and specific epistemological principles in Descartes’ philosophy constitute what Wittgenstein calls “hinges,” which are indispensable for doubting and searching for truth. In this sense, Descartes’ anti-skepticism is more a confidence in reason in order to save the possibility of science than the result of a logical refutation. (shrink)

Résumé Descartes a adopté envers le scepticisme une attitude que d’aucuns parmi ses adversaires ont jugée ambiguë voire coupable. Il a recouru à des arguments sceptiques pour mettre en œuvre son célèbre doute qu’il concevait néanmoins comme l’acte inaugural d’une philosophie en quête de certitude scientifique. Descartes rejetait ainsi la fin poursuivie par les sceptiques et entendait user du doute contre le doute. Cette stratégie fondée sur un scepticisme des moyens pour combattre la fin et l’esprit même du scepticisme s’est-elle (...) révélée pertinente? Richard Popkin a pensé que non, dans son histoire du scepticisme, et conclu à l’échec d’un Descartes « sceptique malgré lui ». Je me propose de nuancer cette thèse de manière significative, suggérant que Descartes, sceptique à un second degré, était bien conscient de la finitude de l’esprit humain et des limites assignables à la recherche de la vérité des choses telles qu’elles sont en soi. (shrink)

(2005). Learning From Descartes, Via Bennett. British Journal for the History of Philosophy: Vol. 13, No. 1, pp. 139-147. doi: 10.1080/0960878042000317636.

The conception of René Descartes as the arch-rationalist has been sufficiently exploded in recent literature; however, there is still a large lacuna in our understanding of how empirical research and experimentation fits within his philosophy. My dissertation is directed at addressing just this problem. I contend that Descartes’ famed method is not a singular monolith but instead two interdependent methods: one directed at metaphysical and epistemological truth, while the other directed at empirical questions and contingent facts of the world. I (...) claim there is evidence for this position not only in his actual scientific practice, but also in the rhetorical structure of the Discourse on Method and the Principles of Philosophy. In exploring the empirical side of Descartes’ method, I show how his unusual system produces a system of experiment designed to serve both as a discovery and verification tool at the same time. As a further application of my interpretation, I argue that the Passions of the Soul and Descartes’ ethical theory expressed in his correspondence must also be seen as part of his two-fold methodology. Instead of attempting to cast Descartes as a virtue ethicist or deontologist, as is normally done, I emphasize that Descartes’ ethics is centered on the mind-body union, and therefore, includes an empirical element as well. The end result is an ethics that requires a detailed study of mechanics, anatomy, physics, as well as medicine. Lastly, I show how this methodology can help us understand the works of some of his early followers: Claude Gadroys and Jacques Rohault. Both of these philosophers not only serve to ground my interpretation, but also to highlight aspects of Cartesian that have often been passed over. I show how the experimentalism of Jacques Rohault goes beyond the epistemological boundaries set up by Descartes, as signifies a new direction that will ultimately eclipse the Cartesian school of thought. In the case of Claude Gadroys, I present a concrete example of the exploitation of the over generality of Cartesian principles. In so doing, I show that while Descartes’ experimentalism was intended to rule out the possibility of occult causes, he in fact created a system that allowed for them, only under a different guise. (shrink)

Clear and distinct perception is the centrepiece of Descartes’s philosophy — it is the source of all certainty — but what does he mean by ‘clear’ and ‘distinct’? According to the prevailing approach, what it means for a perception to be clear is that its content has a certain objective property, like truth. I argue instead that clarity is at least partly a subjective, phenomenal quality whereby a content is presented as true to the perceiving subject. Clarity comes in degrees. (...) Any weak degree of clarity, available to the senses, can be merely subjective, since what it presents as true may not actually be true. But complete clarity, available to intellectual perception, has an objective dimension, since what it presents as true is always some truth, some bit of reality. Further, I argue that the other perceptual qualities that Descartes identifies — obscurity, confusion, and distinctness — are all defined in terms of clarity. Of particular note is the fact that distinctness is not a positive feature to be added to clarity: a distinct perception is just a completely clear perception. (shrink)

This dissertation examines Rene Descartes' view of certainty and defends the view that Cartesian certainty is possible. The first half of the dissertation includes an interpretation of Descartes' epistemology as well as an examination of other interpreters' readings. The second half of the dissertation is a defense of the claim that Cartesian certainty of a particular kind is possible; it includes a variety of contemporary objections and replies in defense of the possibility of certainty.