The present research (total N = 2,057) tested whether people’s folk conception of consciousness aligns with the notion of a “Cartesian Theater” (Dennett, 1991). More precisely, we tested the hypotheses that people believe that consciousness happens in a single, confined area (vs. multiple dispersed areas) in the human brain, and that it (partly) happens after the brain finished analyzing all available information. Further, we investigated how these beliefs arerelated to participants’ neuroscientific knowledge as well as their reliance on intuition, (...) and which rationale they use to explain their responses. Using a computer-administered drawing task, we found that participants located consciousness, but not unrelated neurological processes (Studies 1a & 1b) or unconscious thinking (Study 2) in a single, confined area in the prefrontal cortex, and that they considered most of the brain not involved in consciousness. Participants mostly relied on their intuitions when responding, and they were not affected by prior knowledge about the brain. Additionally, they considered the conscious experience of sensory stimuli to happen in a spatially more confined area than the corresponding computational analysis of these stimuli (Study 3). Furthermore, participants’ explicit beliefs about spatial and temporal localization of consciousness (i.e., consciousness happening after the computational analysis of sensory information is completed) are independent, yet positively correlated beliefs (Study 4). Using a more elaborate measure for temporal localization of conscious experience, our final study confirmed that people believe consciousness to partly happen even after information processing is done (Study 5). (shrink)

This paper deals with the philosophical problems concerned with research in the field of artificial intelligence (AI), in particular with problems arising out of claims that AI exhibits ‘consciousness’, ‘thinking’ and other ‘inner’ processes and that they simulate human intelligence and cognitive processes in general. The argument is to show how Cartesian mind is non-mechanical. Descartes’ concept of ‘I think’ presupposes subjective experience, because it is ‘I’ who experiences the world. Likewise, Descartes’ notion of ‘I’ negates the notion of (...) computationality of the mind. The essence of mind is thought and the acts of thoughts are identified with the acts of consciousness. Therefore, it follows that cognitive acts are conscious acts, but not computational acts. Thus, for Descartes, one of the most important aspects of cognitive states and processes is their phenomenality, because our judgments, understanding, etc. can be defined and explained only in relation to consciousness and not in relation to computationality. We can only find computationality in machines and not in the mind, which wills, understands and judges. (shrink)

This paper evaluates an argument according to which many anthropologists commit themselves to Cartesian dualism, when they talk about meanings. This kind of dualism, it is argued, makes it impossible for anthropologists to adequately attend to material artefacts. The argument is very original, but it is also vulnerable to a range of objections.

Descartes held the following view of declarative memory: to remember is to reconstruct an idea that you intellectually recognize as a reconstruction. Descartes countenanced two overarching varieties of declarative memory. To have an intellectual memory is to intellectually reconstruct a universal idea that you recognize as a reconstruction, and to have a sensory memory is to neurophysiologically reconstruct a particular idea that you recognize as a reconstruction. Sensory remembering is thus a capacity of neither ghosts nor machines, but only of (...) human beings qua mind-body unions. This interpretation unifies Descartes’s various remarks (and conspicuous silences) about remembering, from the 1628 Rules for the Direction of the Mind through the suppressed-in-1633 Treatise of Man to the 1649 Passions of the Soul. It also rebuts a prevailing thesis in the current secondary literature—that Cartesian critters can remember—while incorporating the textual evidence for that thesis—Descartes’s detailed descriptions of the corporeal mechanisms that construct sensory memories. (shrink)

A prominent response is that Cartesian skepticism is too Cartesian. It arises from outmoded views in epistemology and the philosophy of mind that we now properly reject. We can and should move on to other things. §2 takes up three broadly Cartesian themes: the epistemic priority of experience, under-determination, and the representative theory of perception. I challenge some common assumptions about these, and their connection to skepticism. §3 shows how skeptical arguments that emphasize causal considerations can avoid (...) some suspect Cartesian commitments. §4 explores the related idea that perceptual knowledge is what I call instrumental knowledge. Drawing on that connection, §5 examines a skeptical argument based on minimal assumptions, and explains why a Moorean response to it is unsatisfactory. The problem of skepticism is still with us, and it requires a substantive solution. (shrink)

This essay examines Descartes’s impact on medical faculties in the German Reformed context, focusing on the case of the Marburg physician Johann Jakob Waldschmidt (1644–89). It first surveys the wider backdrop of Descartes-reception in German universities, and highlights its generally conciliatory character. Waldschmidt appears as a counterpoint to this tendency. The essay then situates Waldschmidt’s work in the context of confessional politics at the University of Marburg, and specifically of the heightened controversy in Hesse around the teaching of Descartes in (...) the last years of Waldschmidt’s life. The second half of the essay details Waldschmidt’s ambitious program to reform medicine along Cartesian lines, in physiology, pathology, and therapy, and evaluates its merits and limits. (shrink)

Cartesian skepticism has its roots in classical skepticism and is geared to undermine our confidence even in immediate perceptual statements as `I see things in front of me'. We investigate with some assumptions which have as consequence that Cartesian skepticism is avoided in some contexts. I assume that Gettier style difficulties are not engendered by immediate perceptual statements, and I invoke things in general to not make assumptions in the metaphysics of objects. As Gettier issues are side stepped (...) for such statements as mentioned we have that I know that I see things in front of me if, and only if it is true that I see things in front of me, I am justified in believing that I see things in front of me and I believe that I see things in front of me. We assume epistemological deontologism, so that I am justified in believing something iff I am permitted to believe it. We assume Kant’s Law so that ‘ought’ implies ‘can’. As a matter of fact it is impossible for me to not believe that I see things in front of me; it follows by Kant’s Law that it is not the case that it ought to be the case that I do not believe that I see things in front of me; so I am permitted to believe that I see things in front of me, thence by epistemic deontologism I am justified in believing that I see things in front of me. Even the skeptic may not reasonably deny that it is true that I see things in front of me, and the skeptic does also not deny that I believe that I see things in front of me. Given our assumption that Gettier style difficulties do not apply for immediate perceptual statements it follows that I know that I see things in front of me. Needless to say, but one may challenge some of the assumptions we made to reach an anti skeptical conclusion. One may also explore the viability of extending the approach we have put forth here, and it can be of interest to explore further consequences for epistemology in general. The deontological conception of epistemic justification, e.g. in the version according to which a person is justified in holding p just in the case she is in some sense, normatively permitted to believe that p, has come under attack. According to William Alston, the major defect of epistemic deontologism is that it presupposes doxastic voluntarism, i.e. the view that we have direct voluntary control over whether to believe something or not. But Alston thinks that we have no such direct voluntary control, or rather that we only quite rarely have such control. And given this alleged failure of the prevalence of voluntary control, Alston maintains that "it is futile to discuss whether I am permitted to believe that p at t or whether I would be irresponsible in choosing to believe that p at t.". (shrink)

In two recent papers, Michael Della Rocca accuses Descartes of reasoning circularly in the Fourth Meditation. This alleged new circle is distinct from, and more vicious than, the traditional Cartesian Circle arising in the Third Meditation. We explain Della Rocca’s reasons for this accusation, showing that his argument is invalid.

Utilizing Einstein’s comparison of General Relativity and Descartes’ physics, this investigation explores the alleged conventionalism that pervades the ontology of substantival and relationist conceptions of spacetime. Although previously discussed, namely by Rynasiewicz and Hoefer, it will be argued that the close similarities between General Relativity and Cartesian physics have not been adequately treated in the literature—and that the disclosure of these similarities bolsters the case for a conventionalist interpretation of spacetime ontology.

While the Academic sceptics followed the plausible as a criterion of truth and guided their practice by a doxastic norm, so thinking that agential performances are actions for which the agent assumes responsibility, the Pyrrhonists did not accept rational belief-management, dispensing with judgment in empirical matters. In this sense, the Pyrrhonian Sceptic described himself as not acting in any robust sense of the notion, or as ‘acting’ out of sub-personal and social mechanisms. The important point is that the Pyrrhonian advocacy (...) of a minimal conception of ‘belief’ was motivated by ethical concerns: avoiding any sort of commitment, he attempted to preserve his peace of mind. In this article, I argue for a Cartesian model of rational guidance that, in line with some current versions of an agential virtue epistemology, does involve judgment and risk, and thus which is true both to our rational constitution and to our finite and fallible nature. Insofar as epistemic humility is a virtue of rational agents that recognise the limits of their judgments, Pyrrhonian scepticism, and a fortiori any variety of naturalism, is unable to accommodate this virtue. This means that, in contrast to the Cartesian model, the Pyrrhonist does not provide a satisfactory answer to the problem of cognitive disintegration. The Pyrrhonist thus becomes a social rebel, one that violates the norm of serious personal assent that enables the flourishing of a collaborative and social species which depends on agents that, however fallible, are accountable for their actions and judgments. (shrink)

The apparently circular arguments in Descartes’s Meditations should be read as analytic arguments, as Descartes himself suggested. This both explains and excuses the appearance of circularity. Analysis “digs out” what is already present in the meditator’s mind but not yet “expressly known”. Once this is achieved, the meditator may take the result of analysis as an epistemic starting point independent of the original argument. That is, analytic arguments may be reversed to yield demonstrative proofs that follow an already worked-out order (...) of ideas. The “Cartesian Circle,” for example, is circular only when Descartes’s original analytic argument is mistaken for the demonstration that it enables. This approach to Cartesian Circles is unlike the standard approach, which attempts to show that Descartes’s original arguments do work as demonstrations after all. (shrink)

In this paper, I propose to analyse two objections raised by Turner Jr in his paper “On Two Reasons Christian Theologians Should Reject The Intermediate State” in order to show that the intermediate state is an incoherent theory. As we shall see, the two untoward consequences that he mentions do not imply a metaphysical or logical contradiction. Consequently, I shall defend an Intermediate State and I shall propose briefly one metaphysical conception of the human being able to reply to Turner (...) Jr’s objections. (shrink)

In the Principles of Philosophy, Descartes explains several observable phenomena showing that they are caused by special arrangements of unobservable microparticles. Despite these microparticles being unobservable, many passages suggest that he was very confident that these explanations were correct. In other passages, however, Descartes points out that these explanations merely hold the status of “suppositions” or “conjectures” that could be wrong. My main goal in this chapter is to clarify this apparent conflict. I argue first that for Descartes it was (...) indeed possible to have knowledge of unobservable particles and structures, and that the possibility of natural explanations being wrong should be understood as these explanations not being absolutely certain, but only morally certain. I use the debate in contemporary philosophy of science between scientific realism and antirealism as a framework to understand how Cartesian explanations work. Especifically, I argue that Cartesian explanations rely on what Ernan McMullin calls retroduction, which is a mode of inference that justifies beliefs in concrete unobservable entities and processes, based on considerations such as simplicity, coherence, etc. This kind of justification is of common use among scientific realists. Thus, another goal of this chapter is to highlight the relevance of Descartes’ ideas about explanation in the contemporary debate on scientific realism. (shrink)

According to the Monist Interpretation of Descartes, there is really only one corporeal substance—the entire extended plenum. Evidence for this interpretation seems to be provided by Descartes in the Synopsis of the Meditations, where he claims that all substances are incorruptible. Finite bodies, being corruptible, would then fail to be substances. On the other hand, ‘body, taken in the general sense,’ being incorruptible, would be a corporeal substance. In this paper, I defend a Pluralist Interpretation of Descartes, according to which (...) there are many corporeal substances. In particular, I show that none of the claims in the Synopsis about incorruptibility and substance entail either that finite bodies are not substances, or that the only corporeal substance is the entire plenum. (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)

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)

Since Descartes, the nature of doubt has played a central role in the development of metaphysics both positively and negatively. Despite this fact, there has been very little discussion centering round the specific nature of doubt which led, for example, to the Cartesian discovery of the cogito. Certainly, the role of doubt has been well recognized: through doubt Descartes arrives at his indubitable first principle. But what can it mean to doubt the existence of the sensible world? This would (...) seem to rest upon the assumption that we have clear and distinct knowledge of the precise nature of what it means to exist and indeed of what it means to be. As it stands, Descartes’ initiates his Meditations upon certain definite assumptions that demand more thorough interrogation. In this paper and presentation, I examine the possible assumptions inherent in the Cartesian method of doubt within the first and second meditation and the manner in which this leads to the discovery of the cogito. I consider a number of essential questions in light of this: What presuppositions lie at bottom to Cartesian doubt? What is the precise nature of metaphysical doubt? What can it mean to doubt the existence of the sensible world? (shrink)

In his Christian and Metaphysical Meditations (1683) Malebranche develops a reflection in which the self discovers in its interiority that the interlocutor able to answer some of its questions is the divine Word. Through references to the Holy Scriptures and to Augustine, Malebranche constructs a meditative itinerary that differs from the one proposed by Descartes, as it moves from the lumière naturelle in the Cartesian sense to the lumière of the Word. In the light of these historical-theoretical data, we (...) propose a reconstruction of the role played by interiority and meditation in certain texts by Malebranche, highlighting the moments in which he appropriated the Cartesian heritage and those in which he distanced himself from Descartes’ philosophical paradigm. (shrink)

The syllogism and the predicate calculus cannot account for an ontological argument in Descartes' Fifth Meditation and related texts. Descartes' notion of god relies on the analytic-synthetic distinction, which Descartes had identified before Leibniz and Kant did. I describe how the syllogism and the predicate calculus cannot explain Descartes' ontological argument; then I apply the analytic-synthetic distinction to Descartes’ idea of god.

According to a traditional Cartesian epistemology of perception, perception does not provide one with direct knowledge of the external world. Instead, your immediate perceptual evidence is limited to facts about your own visual experience, from which conclusions about the external world must be inferred. Cartesianism faces well-known skeptical challenges. But this chapter argues that any anti-Cartesian view strong enough to avoid these challenges must license a way of updating one’s beliefs in response to anticipated experiences that seems diachronically (...) irrational. To avoid this result, the anti-Cartesian must either license an unacceptable epistemic chauvinism, or else claim that merely reflecting on one’s experiences defeats perceptual justification. This leaves us with a puzzle: Although Cartesianism faces problems, avoiding them brings a new set of problems. (shrink)

This book is a quest for the real Plato, forever hiding behind the veil of drama. The quest, as the subtitle indicates, is Cartesian in that it looks for Plato independently of the prevailing paradigms on where we are supposed to find him. The result of the quest is a complete pedagogical platform on Plato. This does not mean that the book leaves nothing out, covering all the dialogues and all the themes, but that it provides the full intellectual (...) apparatus for doing just that. It consists of two parts. The first is a general orientation in three chapters, one each pertaining to the life, thought, and works of Plato. The second is a dialogic companion covering the four dialogues built around the last days of Socrates, with a separate chapter devoted to each: Euthyphro, Apology, Crito, and Phaedo. (shrink)

François Lamy, a Benedictine monk and Cartesian philosopher whose extensive relations with Arnauld, Bossuet, Fénélon, and Malebranche put him into contact with the intellectual elite of late-seventeenth-century France, authored the very first detailed and explicit refutation of Spinoza’s Ethics in French, Le nouvel athéisme renversé. Regrettably overlooked in the secondary literature on Spinoza, Lamy is an interesting figure in his own right, and his anti-Spinozist work sheds important light on Cartesian assumptions that inform the earliest phase of Spinoza’s (...) critical reception in the seventeenth-century. I begin by presenting Lamy’s life and the contentious state of Spinoza’s French reception in the 1680 and 1690s. I then discuss a central argument in Lamy’s refutation, namely the Cartesian objection that Spinoza’s account of the conceptual independence of attributes is incompatible with the theory of substance monism. Contrasting Lamy’s objection with questions put to Spinoza by de Vries and Tschirnhaus, I maintain that by exhibiting the direction Spinoza’s views on substance and attribute took in maturing we may accurately assess the strength of Spinoza’s position vis-à-vis his Cartesian objector, and I argue that, in fact, Spinoza’s mature account of God as an expressive ens realissimum is not vulnerable to Lamy’s criticism. In conclusion, I turn to Lamy’s objection that Spinoza’s philosophy is question-begging in view of Spinoza’s account of God, and I exhibit what this point of criticism tells us about the intentions of the first French Cartesian rebuttal of the Ethics. (shrink)

Bayesian conceptions of evidence have been invoked in recent arguments regarding the existence of God, the hypothesis of multiple physical universes, and the Doomsday Argument. Philosophers writing on these topics often claim that, given a Bayesian account of evidence, our existence or something entailed by our existence (perhaps in conjunction with some background knowledge or assumption) may serve as evidence for each of us. In this paper, I argue that this widespread view is mistaken. The mere fact of one's existence (...) qua conscious creature cannot serve as evidence on the standard Bayesian conception of evidence because knowledge of one's existence is a necessary part of the background knowledge relative to which all epistemic probabilities are defined. It follows that some formulations of the fine-tuning argument (for theism or a multiverse), the argument from consciousness (for theism) and a rejoinder to the Doomsday argument are mistaken. (shrink)

Spinoza's political writings are not merely a theoretical exercise or a philosophical conclusion of his system. They are part of a very practical political discussion in seventeenth-century Holland. Spinoza was influenced by and played a role in a political movement known as "Radical Cartesianism", which combined ideas from Descartes and Hobbes in order to argue against the reinstatement of a stadholder. This movement provided arguments for religious and philosophical freedom and against monarchy based on a fundamental drive of self-preservation and (...) a particular understanding of the passions. This paper provides a general introduction to Radical Cartesianism by explaining its historical context and discussing two Radical Cartesian voices: Lambertus van Velthuysen and the brothers De la Court. The final section discusses Spinoza's political philosophy as a systemization of their Radical Cartesian ideas. (shrink)

Jennifer Windt’s Dreaming is an enormously rich and thorough book, developing illuminating connections between dreaming, the methodology of psychology, and various philosophical subfields. I’ll focus on two epistemological threads that run through the book. The first has to do with the status of certain assumptions about dreams. Windt argues that the assumptions that dreams involve experiences, and that dream reports are reliable — are methodologically necessary default assumptions, akin to Wittgensteinian hinge propositions. I’ll suggest that Windt is quietly pre-supposing some (...) sceptical assumptions, and that recent literature in epistemic externalism may bear in important ways on her arguments. The second thread involves the perennial sceptical worry that dreaming threatens ordinary knowledge. I’ll suggest again that Windt makes tacit sceptical assumptions one may wish to resist. (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.

I claim that Berkeley's main argument against abstraction comes into focus only when we see Descartes as one of its targets. Berkeley does not deploy Winkler's impossibility argument but instead argues that what is impossible is inconceivable. Since Descartes conceives of extension as a determinable, and since determinables cannot exist as such, he falls within the scope of Berkeley's argument.

This essay presents Descartes’s anti-hylomorphism in The Meteors published in 1637 and in the unpublished works that precede it, The World (Treatise on Light) and the Rules for the Direction of the Mind.

I propose some arguments suggested by Descartes' text for the conclusion that we are not identical to our bodies. I suggest that a natural extension of those arguments leads to Plantinga's Replacement Argument. I conclude that even if such an argument is plausible, its conclusion does not establish the further claim that we can exist without a body.

This paper offers a reconstruction of the interpretations of Descartes's ideas of place and motion by Dutch Cartesians (Henricus Regius, Johannes de Raey, Johannes Clauberg, and Christoph Wittich). It does so by focusing on the reading of Descartes's Principia philosophiae (1644) offered, in particular, by the dictated commentaries on it. It is shown how such commentaries bring to the light new potential Aristotelian-Scholastic sources of Descartes, and the different ways Dutch Cartesians brought to the fore, also with the help of (...) such sources, the rationale of the Cartesian text: in doing so, they constituted a philosophical school. (shrink)

Laboratory science is our only source of knowledge about the world as it is apart from our perceptions of the world. Empiricist philosophy, relying on evidence consisting in human perceptions, can only give us knowledge of phenomena making up the world-perceived, which recent neuroscience tells us is wholly and entirely constructed by our neuron-based human perceptual apparatus. In this light, empiricist philosophy should explicitly and fundamentally be reconceived as a method of thinking critically about phenomena, i.e. as a stripped down, (...) fallibilist, non-foundationalist version of “phenomenology”. I also describe implications of these proposals for thinking critically about and conceptualizing phenomena like the Cartesian “I”-that-thinks, consciousness, mind, personal identity, free will, and causal relationships between the brain and the conscious “I.”. (shrink)

Vehicle externalists hold that the physical substrate of mental states can sometimes extend beyond the brain into the body and environment. In a particular variation on vehicle externalism, Susan Hurley (1998) and Alva Noë (2004) have argued that perceptual states, states with phenomenal qualities, are among the mental states that can sometimes spread beyond the brain. Their vehicle externalism about perceptual states will be the main topic of this article. In particular, I will address three strong objections to their vehicle (...) externalism, objections by Ned Block (2005), Jesse Prinz (2006), and Fred Adams & Ken Aizawa (2008). Though in some ways these objections appear disparate, I will argue that all of them depend on a crucial presupposition, one which Hurley, Noë, and their sympathizers should reject. This presupposition is that perceptual character is fixed by an instantaneous snapshot of neural states, a view that Hurley dubbed ‘temporal atomism.’ To put the presupposition in more familiar terms, all three objections are implicitly committed to something like Dennett’s Cartesian Theater (1991). -/- In the first part of the article, I will discuss Hurley and Noë’s views, and include reasons why their views entail the rejection of the Cartesian Theater. In the next part of the article I will introduce the three objections and show how they presuppose something like a Cartesian Theater. I will also show that, if the Cartesian Theater is rejected, the objections all vanish. In the final part of the article I address the charge that Noë and Hurley confuse causation with constitution. This charge reveals a lack of appreciation for the way in which dynamical explanation motivates Hurley’s externalism. (shrink)

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

In this essay I argue that Berkeley is proto-phenomenologist. The term phenomenology will chiefly be understood in terms of the approach of Edmund Husserl. Berkeley is attentive to the correct use of significations in philosophical exposition, the subjective character of experience, the motility of the perceiver and the transcendence of things. Like the phenomenologists he rejects materialism, naturalism and scepticism. He seeks to preserve the evidences of ordinary perception, setting out an account of scientific theory that can cohere with them. (...) In the first part of this essay I go through some of the more clear-cut ways in which Berkeley anticipates Husserl and some of the latter’s successors. In the second part I lay out their criticisms of Berkeley, also indicating what they hold in common. In the third and final part I consider some of the ways in which Berkeley can meet these criticisms, either readily or through certain qualifications, and I bring out his most significant contributions as a proto-phenomenologist. My aim is to show there are more than traces of the phenomenological attitude in Berkeley. In his efforts to save the appearances, he goes back to that world in which we live and breathe, if not quite have our being. (shrink)

RésuméLa critique kantienne de la psychologie rationnelle est une expérience de pensée visant ni un individu ni une école, mais une tendance de la raison humaine à « hypostasier » la condition intellectuelle suprême d'une connaissance quelconque (le « Je pense ») en connaissance du « moi ». Cette tendance implique une circularité qui est également la cible des critiques transcendantales bien plus familières qui visent Locke et Hume. De même qu'un nouveau type de cercle (dit « de niveau »), (...) cet article propose une conception des arguments transcendantaux différente de celle présupposée dans la plupart des débats contemporains sur l'empirisme, le naturalisme et le fondationnalisme cartésien. (shrink)

Introduction Conatus is a specific concept within Descartes’s physics. In particular, it assumes a crucial importance in the purely mechanistic description of the nature of light – an issue that Des- cartes considered one of the most crucial challenges, and major achievements, of his natural phil- osophy. According to Descartes’s cosmology, the universe – understood as a material continuum in which there is no vacuum – is composed of a number of separate yet interconnected vortices. Each of these vortices consists (...) in a set of bands rotating around their centres. The bands are com- posed of corpuscles of the three elements, each distinguished on the basis of their different shapes and sizes. The small globules of the second element, although impeded by the other parts of heaven, strive to move away from the centre of the vortex around which they revolve, thus exerting a certain force against the surrounding bodies. This striving or conatus, though a mere force rather than a genuine motion, is transmitted instan- taneously and along straight lines from body to body. According to Descartes, then, the nature of light consists in this striving alone. This account must be understood as strictly connected to the fundamental laws that regulate the Cartesian world. It is particularly important to recall that for Descartes the centrifugal force exerted by a rotating body is understood to be a consequence of the intrinsic rectilinearity of every motion. As the second of the three Laws of Nature set forth in Book II of the Principles of Philosophy establishes, “all motion is in itself rectilinear; and hence any body moving in a circle tends to move away from the centre of the circle which it describes as proved by the fact that a stone rotating in a sling tends to move centrifugally along the tangent of each point described by a circle.1 Similarly, each of the globules of the second element “strives to recede with a great force from the centre of the vortex in which it rotates; it is in fact prevented by the other globules placed all around, not differently than a stone in a sling”. Within this framework, as I show later, conatus occurs when a body’s intrinsic tendency to rectilinear motion is impeded by an external constraint. As Stephen Gaukroger notes, the use of the term conatus in the Principles – like “vis” and “ action ” – shows that Descartes “cannot avoid dynamic terminology”, despite his declared intent “to construe motion in a purely kinematic way”. Indeed, Gaukroger observes that the notions of force action and striving are systematically employed in the Principles – appearing 290, 59 and 8 times, respectively. Also noteworthy, conatus was – together with the more familiar concepts of actio and vis – a significant element of the conceptual apparatus of Scholastic natural philosophy. As will be seen later – and this is the first goal of this paper – here the concept of conatus had a very specific function. Indeed, it was a central part of the Aristotelian- Scholastic account of gravitation. Conatus was used to refer to the striving of a body to move towards its natural place – especially in cases where its natural motion was hindered or impeded by an external mover. This specific use of the concept of conatus can be found in texts on natural philosophy from the end of the sixteenth through the late seventeenth century. Notably, it occurs in some of the late -Scho- lastic texts which held special significance for Descartes’s thought. Therefore, Descartes introduces conatus in a context in which this concept already had a very specific meaning, and one of which he was very probably aware. The possible relations between these two apparently very different con- cepts have therefore to be scrutinized. I thereby propose to undertake a comparison between the Scho- lastic and the Cartesian conceptions of conatus. I hope to show that certain traits of the former are indeed echoed by the latter, although adapted to the much changed physical paradigm of Cartesian physics. In fact, Descartes’s conatus, though sharing some important similarities with the old one, underwent significant transformations in terms of both its meaning and its application. However, I hope to show that these concepts are both used to describe the behaviour of bodies in relation to their intrinsic motive tendency, and in particular when this tendency is impeded or prevented. Such a reconstruction offers two main areas of interest. On an immediate level, it furthers the general efforts of scholars over the past decades to reconstruct the full extent of the relations between Descartes’s thought and Scholastic philosophy. However, there is another significant reason for taking an interest in the ties between the Scholastic and the Cartesian conceptions of conatus. Indeed, the Cartesian conatus must be seen as crucial to a proper understanding of the broader, diverse conceptualization that this idea enjoyed in the thought of many of the most important philosophers of the early modern period, namely Spinoza, Hobbes and Leibniz. In particular, Spinoza, were directly influenced by Descartes in their unique formulations of conatus. Thus a reconstruction of the context in which Descartes formulated his conatus and of its relations to a pre-existing Scholastic conception will enable us to better reconstruct the history of this idea in the early modern period. The paper is structured as follows: in the first part, I provide a thorough review of the Scho- lastic employment of the concept conatus – both its meaning and the extent of its usage. I then show that it occurs in some of the most prominent Cartesian sources. Finally, I shall provide an account of Descartes’s theory of circular motion and conatus with the specific aim of empha- sizing the elements of both continuity and discontinuity that justify the claim that Descartes’s con- ception of conatus is reminiscent of the Scholastic one. (shrink)

In chapter 7 of The Varieties of Reference, Gareth Evans claimed to have an argument that would present "an antidote" to the Cartesian conception of the self as a purely mental entity. On the basis of considerations drawn from philosophy of language and thought, Evans claimed to be able to show that bodily awareness is a form of self-awareness. The apparent basis for this claim is the datum that sometimes judgements about one’s position based on body sense are immune (...) to errors of misidentification relative to the first-person pronoun 'I'. However, Evans’s argument suffers from a crucial ambiguity. 'I' sometimes refers to the subject's mind, sometimes to the person, and sometimes to the subject's body. Once disambiguated, it turns out that Evans’s argument either begs the question against the Cartesian or fails to be plausible at all. Nonetheless, the argument is important for drawing our attention to the idea that bodily modes of awareness should be taken seriously as possible forms of self-awareness. (shrink)

Chapter 2 primarily discusses Bernstein’s account and its differences both from Nagle’s metaphysical realism and Rorty’s postmodern pragmatism. Trying to diagnose assumptions that polarize thinkers to become objectivists and relativists, Bernstein articulates a Cartesian Anxiety he thinks they ironically both share. Descartes’ anti-skeptical wave of rigor was presented as a rationalistic project of rebuilding an unstable and dilapidated ‘house of knowledge’ on secure philosophical and scientific foundations. His overtly foundationalist metaphor of rebuilding from timbers set “in rock or hard (...) clay” shapes Descartes’ attempt to refute the skeptic and to secure the objectivity of knowledge as pursued by a more rigorous and analytical method of knowing. (shrink)

The essay investigates two personae: Socrates as depicted by Plato and Descartes as narrator of the Discourse on Method and Meditations. Socrates is aware of his ignorance and insists on remembering to care for the self; Descartes claims to have overcome ignorance through a method that breaks problems into simple and certain elements, establishing a self-certain yet impersonal subject that comprehends and controls objects. The Cartesian approach has led to the modern process of “liquidation” that reduces beings, property, and (...) truth to resources, wealth, and information – initiating the dangerous and unprecedented epoch known as the Anthropocene. The Socratic approach offers some promise of reintegration and resistance to liquidation by urging us to care for wholeness and recognizing that being exceeds what we comprehend. (shrink)

Interpreters of Kant’s Refutation of Idealism face a dilemma: it seems to either beg the question against the Cartesian sceptic or else offer a disappointingly Berkeleyan conclusion. In this article I offer an interpretation of the Refutation on which it does not beg the question against the Cartesian sceptic. After defending a principle about question-begging, I identify four premises concerning our representations that there are textual reasons to think Kant might be implicitly assuming. Using those assumptions, I offer (...) a reconstruction of Kant’s Refutation that avoids the interpretative dilemma, though difficult questions about the argument remain. (shrink)

Husserl‘s Cartesian Meditations- Irfan Ajvazi.

In De gravitatione, Newton contends that Descartes' physics is fundamentally untenable since the "fixed" spatial landmarks required to ground the concept of inertial motion cannot be secured in the constantly changing Cartesian plenum. Likewise, it is has often been alleged that the collision rules in Descartes' Principles of Philosophy undermine the "relational" view of space and motion advanced in this text. This paper attempts to meet these challenges by investigating the theory of connected gears (or "kinematics of mechanisms") for (...) a potential Cartesian method of positing the permanent reference frames necessary to uphold Descartes' conservation law for the quantity of motion. In particular, the insights gained from an examination of the kinematics of mechanisms will provide the Cartesian with much needed resources to counter the two threats posed above. (shrink)

In this paper, I address the issue of whether the evil demon could have caused the idea of God. In order to determine the capabilities of the evil demon, I perform a thought experiment in which I reaffirm the con-clusion that an imperfect being could have never caused an idea of perfection and infinitude, i.e., the idea of God. The article is divided into five sections and a conclusion. While the first section is introductory, the second looks at the problem (...) of God and knowledge certainty. Elucidating how reality is gradual according to Descartes, in the third section I address the distinction between objective, formal and eminent reality. In turn, in the fourth section, I argue that if the objective reality of God exists, that is, an idea of perfection, the imperfect evil demon could have never caused it. The last section examines the reverse argument of the fourth section, viz, whether God could have caused the existence of evil and imperfection. (shrink)

Husserl’s transcendental philosophy has frequently been disparaged in many of the central philosophical debates of the 20th century. And many of his most virulent critics have been adherents of phenomenological philosophy. Critiques have stressed the bankruptcy of the concept of ultimate foundation in relation to a transcendental subject that is allegedly solipsistic and conditioned by modern prejudices. Two essential insights have led me to reconsider such critical assessments.1 On the one hand, the open-ended and infinite nature of Husserlian intentional analysis (...) seems to indicate what could be characterized as a “withdrawal of ground” or an endless deferral of a self-sufficient, “ultimate foundation” in Descartes’s sense. On the other hand, a close examination of Husserlian concepts such as ‘ground’ and ‘rational knowledge’ reveals that their original Cartesian meaning has undergone semantic changes in Husserlian thought. In the present essay, I aim to lend support to these insights by examining the Fourth and, very briefly, Fifth Cartesian Meditations. The examination comprises four stages. First, it makes a case for focusing on the Cartesian Meditations, where Husserl’s “Cartesian option” seems obvious. Second, it attempts to disclose a differentiated foundational discourse in the Fourth Meditation, one that is dedicated to the difficult and core issue of the “ego’s self-constitution.” Third, it reassesses the foundational discourse of the intersubjective transcendental theory sketched in the "Fifth Meditation," after pointing out some misunderstandings concerning the sense of Husserl’s transcendental “idealism” and “solipsism.” And, finally, it asks whether the notions of ‘ground’ and ‘reason’—whose sense is shown in the foregoing stage to have been transformed—do, in fact, belong to a project that is, as Husserl’s critics claim, no longer feasible. The guiding thesis here is that if these steps are taken and my hypotheses confirmed, then Husserl’s work will still be able to contribute significantly to contemporary debates on the status of scientific discourse and the nature and goals of practical discourse, where both are conceived of as grounded in a radically understood human praxis. (shrink)

There are few philosophers who have been so influential in their own lifetimes and had so much influence, only to be subsequently ignored, as Henri Bergson (1859-1941). When in April 1922, Bergson debated Einstein on the nature of time, it was Bergson who was far better known and respected. Now Einstein’s achievements are known to everyone, but very few people outside philosophy departments have even heard of Bergson. Following Friedrich Schelling and those he influenced, Bergson targeted the Cartesian dualism (...) that permeates the culture of modernity. In doing so, he challenged deep assumptions rooted in and cemented in place by Descartes’ philosophy. It this article I will argue that Bergson made considerable progress in this attack on Cartesian dualism, and diverse philosophers subsequently built on his ideas. However, failure to appreciate the source of these ideas has weakened their impact, being scattered among different disciplines by diverse philosophers and scientists who drew upon Bergson’s work while forgetting details of his philosophy. This article is an effort to rectify this situation. (shrink)