René Descartes

Enlightenment philosopher, René Descartes, set out to establish what could be known with certainty, untainted by a deceiving demon. With his method of doubt, he rejected all previous beliefs, allowing only those that survived rigorous scrutiny. In this essay, Leslie Allan examines whether Descartes's program of skeptical enquiry was successful in laying a firm foundation for our manifold beliefs. He subjects Descartes's conclusions to Descartes's own uncompromising methodology to determine whether Descartes escaped from a self-imposed radical skepticism.

Argues that Descartes's commitment to mind-body causation leads to a commitment to body-body causation.

In Meditation I, Descartes dismisses the possibility that he might be insane as a ground for doubting that the senses are a source of knowledge of the external world. In this paper, I argue that Descartes was justified in so doing, and draw some general epistemological conclusions from this result.

Descartes argues that, apart from the existence of a veracious God, we can have no reason to believe that we possess reliable cognitive faculties, with the result that, if atheism is true, not even our seemingly most certain beliefs can count as knowledge for us. Since the atheist denies the existence of God, he or she will be precisely in this position. I argue that Descartes' argument is sound, and that atheism is therefore self-refuting.

This paper contests a standard interpretation of how Descartes comes to the conclusion that he is not his body in the second meditation. I propose an alternative interpretation in its place.

Descartes’s First Meditation imposes a pressing, currently neglected problem of reconciling its sound central argument that concludes that all the meditator’s current and currently prospective results are doubtful with subsequent Meditations’ results that are not at all doubtful. The problem cannot be addressed by received interpretations that fail to credit the First Meditation with a sound extended central argument; it cannot be solved by interpretations reliant on standard translations that obscure the Second Meditation’s opening argument. This study credits the First (...) Meditation’s three-premise argument for its announced conclusion; the Second Meditation’s opening argument for its meditator’s announced “Archimedean” conclusion; and a contribution from the Meditations’ genre of dramatic monologue. The solution specifies the Meditations portrayal of its meditator’s epistemic conceptual transition. (shrink)

The purpose of this essay is to exhibit in detail the setting for the version of the Cogito Argument that appears in Descartes’s Meditations. I believe that a close reading of the text can shed new light on the nature and role of the “evil demon”, on the nature of God as he appears in the first few Meditations, and on the place of the Cogito Argument in Descartes’s overall scheme.

Looking at every sense this article proves through deduction that your mind needs a source to dream. Dreams are old experienced essences of platonic forms. You can only experience new forms essences when you are awake because of initial experiences.

This article is to analize the doctrines of two great philosophers, Descarets and Ibn-Sina on the soul.As he himself said, Descartes, while doubting on anything, was sure that " cogito ergo sum".He found this an unquestionable fact, therefore he took it as the first principle.After Descartes, some objections have been posed against his doctrine; for example the objection, posed by Ibn-Sina. Ibn-Sina believed that thinking is among the soul's acts, and the soul cannot be affirmed through one of its own (...) acts; for, by the thinking, either the thinking in the universal sense of the term is meant or the thinking of a particular individual is meant; and in the latter case, it is absurd to go to find "the unknown". (shrink)

Cet article vise à souligner la centrante de Laf.308, Br.793 au sein des Pensées, tout en déterminant sa portée anti-cartésienne. Une confrontation avec d'autres fragments connexes permet de préciser ce que Pascal met sous le deuxième ordre : une science relayée par la pensée, non la métaphysique cartésienne. Il devient alors possible de discuter l'interprétation de Jean-Luc Marion et de montrer que, loin d'opérer une simple destitution de la métaphysique cartésienne au nom de la charité chrétienne, Laf.308, Br.793 résume bien (...) l'antagonisme de deux systèmes philosophiques. The object of this article is to point out the central place of Laf.308-Br.793 within the Pensées and to determine at the same time its anti-cartesian implications. By confronting it with connected fragments, we are allowed to state what exactly Pascal does include under the second order, that is, not the cartesian metaphysics, but a science whose relay is the thought. So it becomes possible to discuss Jean-Luc Marion's interpretation by showing that, far from simply producing a destitution of the cartesian metaphysics in the name of Christian charity, Laf.308-Br.793 concentrates well the antagonism between two philosophical systems. (shrink)

In this chapter, I examine similarities and divergences between Du Châtelet and Descartes on their endorsement of the use of hypotheses in science, using the work of Condillac to locate them in his scheme of systematizers. I conclude that, while Du Châtelet is still clearly a natural philosopher, as opposed to modern scientist, her conception of hypotheses is considerably more modern than is Descartes’, a difference that finds its roots in their divergence on the nature of first principles.

In this paper, I consider Mary Astell's contributions to the history of feminism, noting her grounding in and departure from Cartesianism and its relation to women.

While imagination was a major concern for Descartes throughout his work, Cartesian scholars have paid little attention to this faculty, especially regarding to the Meditations of First Philosophy. This article highlights the epistemic role of imagination in the First Meditation. I argue that the way Descartes’s conception of imagination is elaborated in the First Meditation helps question our interpretation of his dualism, and enables us to formulate the hypothesis that imagination belongs to the essence of the mind. It results that (...) Descartes’s dualism should not be interpreted as separation (or separability) regarding to existence. (shrink)

_ Source: _Page Count 46 René Descartes is neither a Conceptualist nor a Platonist when it comes to the ontological status of the eternal truths and essences of mathematics but articulates a view derived from Proclus. There are several advantages to interpreting Descartes’ texts in light of Proclus’ view of universals and philosophy of mathematics. Key passages that, on standard readings, are in conflict are reconciled if we read Descartes as appropriating Proclus’ threefold distinction among universals. Specifically, passages that appear (...) to commit Descartes to a Platonist view of mathematical objects and the truths that follow from them are no longer in tension with the Conceptualist view of universals implied by his treatment of the eternal truths in the _Principles of Philosophy_. This interpretation also fits the historical evidence and explains why Descartes ends up with seemingly inconsistent commitments to divine simplicity and God’s efficient creation of truths that are not merely conceptually distinct from the divine essence. (shrink)

In the Letter to the Faculty of Theology of the Sorbonne, Descartes makes a reference to Leo's X's encyclical Apostolici Regiminis (1513), which supports the Aristotelian-Scholastic conception of the soul as anima corporis forma According to Descartes' doctrine of the eternal truths, God's power is absolutely unlimited. One of the consequences of this doctrine is that God could join a rational (human) soul to any body, which implies that the union of soul and the body in the Cartesian system is (...) not substantial in the Scholastic sense of the word. In bringing in Leo's X's encyclical to support his conception of the soul, Descartes used a papal document for purposes contrary to those for which it had been designed. Dans la Lettre à la Faculté de théologie de la Sorbonne, Descartes fait référence à l'encyclique Apostolici Regiminis (1513), qui soutient la conception aristotélico-scolastique de l'âme en tant qu'anima corporis forma Or, selon la doctrine de la création des vérités éternelles, le pouvoir de Dieu est sans limites : une de ses conséquences en est que Dieu eût pu unir l'âme rationnelle (humaine) à n'importe quel corps, ce qui implique que l'union de l'âme et du corps dans la philosophie cartésienne ne soit pas substantielle — du moins au sens scolastique du terme. En citant l'encyclique Apostolici Regiminis au commencement des Meditations, Descartes a en fait utilisé le document pontifical à l'opposé du but pour lequel il avait été conçu. (shrink)

The Dioptrique, often translated as the Optics or, more literally, as the Dioptrics is one of Descartes’ earliest works. Likely begun in the mid to late 1620’s, Descartes refers to it by name in a letter to Mersenne of 25 November 1630 III, 29). Its subject matter partially overlaps with Descartes’ more foundational project The World or Treatise on Light in which he offers a general mechanistic account of the universe including the formation, transmission, and reception of light. Although Galileo’s (...) condemnation by the Church prompted Descartes to abandon, in 1633, his plans for publishing The World, he continued in the ensuing years to vigorously pursue a number of scientific projects, including projects related to his work in optics. He was eventually persuaded to publish three essays highlighting some of his discoveries together with an introductory essay concerning “the method for rightly directing one’s reason and searching for truth in the sciences” . As one of those essays, Descartes’ Dioptrics finally appeared in print together with the Discourse on Method, the Meteorology and the Geometry in the summer of 1637 in a French language edition. It was republished in a Latin edition in 1644. The subject matter of the Dioptrics may be thought of as covering three main topics and is formally divided by Descartes into ten chapters or “discourses”. The first main topic concerns the nature of light and the laws of optics. In the first discourse, Descartes invites his readers to. (shrink)

The very first line of Spinoza’s magnum opus, the Ethics, states the following surprising definition: By cause of itself I understand that whose essence involves existence, or that whose nature cannot be conceived except as existing [Per causam sui intelligo id, cujus essentia involvit existentiam, sive id, cujus natura non potest concipi, nisi existens]. As we shall shortly see, for many of Spinoza’s contemporaries and predecessors the very notion of causa sui was utterly absurd, akin to a Baron Munchausen attempting (...) to lift himself above a river by pulling his hair up. How can a thing cause itself into existence, if before the causal activity, the cause did not exist at all? Indeed, in one of his earliest works, Spinoza himself claimed: “No thing, considered in itself, has in itself a cause enabling it to destroy itself (if it exists), or to make itself [te konnen maaken] (if it does not exist)” (KV II 26|I/110/14-16). Moreover, in other early works, Spinoza refers to God as an “uncreated thing” (TIE §97) or “uncreated substance” (CM II 1|I/237/20), and not as a cause-of-itself as in the Ethics. What made Spinoza desert the common, traditional, view of God as the uncaused first cause, or uncreated substance, and adopt instead the apparently chimerical notion of God as causa sui? A very likely explanation for this development suggests that Spinoza’s rationalism, his commitment to the principle that everything must have a reason both for its existence and for its non-existence – a commitment stated clearly both in the Ethics (see, for example, E1p8s2 and E1p11d2), and in Spinoza’s other writings (see, for example, Ep. 34 (IV/179/29)) – made him realize that the notion of an uncreated, or uncaused, thing is of no use for him: if everything must have a cause, then the first cause, or the most fundamental being, must be a cause-of-itself. All this is well and good, but we should not let Spinoza off the hook so easily, for the immediate question which arises now is whether Spinoza is not simply cheating his readers. Does Spinoza have a reason – i.e., argument – that could convince us that causa sui is indeed a more adequate characterization of God and not merely an opportunistic and ad hoc façade for the good old uncaused cause? While there are many important questions surrounding Spinoza’s notion of causa sui, it is the last question which will be the focus of this short chapter. In the first part of this chapter, we study, briefly, Descartes’ engagement with the notion of causa sui. In the second part, I show that Spinoza understood the causation of causa sui as efficient, and not formal, causation. The third and final part will attempt to locate precisely the alleged problem with the notion of causa sui, and consider how could Spinoza defend the intelligibility of this notion. Regrettably, limitations of space will force us to leave the examination of Spinoza’s closely related notion of being-conceived. (shrink)

A revisionary reading of Descartes’ epistemology is beginning to emerge in the literature on Descartes’ ethics. Some commentators have argued that Descartes ascribes to passionate epistemology, which claims that epistemic progress in the Meditations requires moral progress—in particular, the regulation of the passions. I argue that on a plausible understanding of the cognitive nature of the passions— namely, a motivationalist reading—the passions cannot perform any epistemic work in the Meditations. Thus, while the presence of the passions in the Meditations is (...) interesting and deserving of our attention, they do not require us to revise our canonical understanding of the Meditations as an exercise of pure thought. Furthermore, we need not abandon the standard claim that ethical practice emerges in the tree of philosophy only after metaphysics and epistemology have been established. (shrink)

Cet article se propose de mettre au jour l'influence occamienne de la critique que Caterus adresse, dans les Premières objections, à la notion cartésienne de réalité objective de l'idée. This article intends to point out the ockhamist inspiration of the arguments of Caterus against the cartesian notion of idea's objective reality in the First objections.

My aim in what follows is to expound and (if possible) resolve two problems in Spinoza’s theory of mind. The first problem is how Spinoza can accept a key premise in Descartes’s argument for dualism—that thought and extension are separately conceivable, “one without the help of the other”—without accepting Descartes’s conclusion that no substance is both thinking and extended. Resolving this problem will require us to consider a crucial ambiguity in the notion of conceiving one thing without another, the credentials (...) of Descartes’s principle that each substance has a principal attribute, and the prospect of neutral monism as a theory of the mind. The second problem is how Spinoza can maintain that each mental event is identical with some physical event (and conversely) while denying that there is ever any causal interaction between mental and physical events. If one mental event causes another and the first is identical with some physical event, must that physical event not cause the mental event? Resolving this problem will require looking into the reach of opacity in Spinoza’s philosophy and considering whether there are ever any legitimate exceptions to Leibniz’s Law. (shrink)

According to the doctrine of infallibility, one is permitted to believe p if one knows that necessarily, one would be right if one believed that p. This plausible principle—made famous in Descartes’ cogito—is false. There are some self-fulfilling, higher-order propositions one can’t be wrong about but shouldn’t believe anyway: believing them would immediately make one’s overall doxastic state worse.