This paper defends an interpretation of Descartes according to which he sees us as having normative (and not merely psychological) certainty of all clear and distinct ideas during the period in which they are apprehended clearly and distinctly. However, on this view, a retrospective doubt about clear and distinct ideas is possible. This interpretation allows Descartes to avoid the Cartesian Circle in an effective way and also shows that Descartes is surprisingly, in some respects, an epistemological externalist. The paper goes (...) on to defend this interpretation against some powerful philosophical objections by Margaret Wilson and others by showing how Descartes' doctrine of the creation of the eternal truths can be brought in to support his epistemology. This doctrine and other analogous positions in Descartes can also reveal that Descartes, again surprisingly, takes important steps toward doing epistemology without direct appeal to God and God's veracity. (shrink)

Descartes is not widely recognized for his ethics; indeed, most readers are unaware that he had an ethics. However, Descartes placed great importance on his ethics, claiming that ethics is the highest branch of his philosophical system. I aim to understand the systematic relationship Descartes envisions between his ethics and the rest of his philosophy, particularly his metaphysics and epistemology. I defend three main theses. First, I argue against the recent trend in the literature that claims that the chief virtue (...) in Descartes’ ethics—generosity—is acquired in the Meditations. On this view, the presence of moral virtue in the Meditations shows that ethical practice is intertwined with metaphysics and epistemology. I argue that generosity cannot be acquired in the Meditations because acquiring generosity presupposes several metaphysical and physical truths that the meditator cannot access given her epistemic position. Thus, I maintain that metaphysics and epistemology is foundational to ethics. Second, I resolve the tension between Descartes’ description of distinct virtues, and his insistence that there is only a single virtue—the disposition to judge well. Drawing from his theory of conceptual distinction in his metaphysics, I argue that Descartes offers a unique account of the unity of the virtues. Although Descartes describes different virtues, he thinks that all of them are identical to each other because they are reducible to the disposition to judge well. Nonetheless, we can conceptually distinguish between the virtues because we can regard the disposition to judge well in different ways given the various applications it has in different types of moral situations. Third, I show that some of Descartes’ ethical concepts inform his epistemology. I draw from Descartes’ theory of virtue to address “the problem of knowledge preservation,” that is, how to render perfect knowledge— scientia—stable in light of the instability of clear and distinct perceptions. I argue that Descartes intends to preserve scientia by grounding items of scientia in virtuous habits of belief. These habits of belief are established through repeated engagement with cognitive routes to clear and distinct perceptions, and are ultimately grounded in memory. This reading has the advantage of explaining Descartes’ notoriously confusing remarks about memory in response to the Cartesian circle. (shrink)

A recepção de Os meteoros, publicado em 1637 como um dos ensaios do Discurso do método, foi marcada por uma forte reação contra o mecanicismo cartesiano. Alguns de seus contemporâneos, adeptos da filosofia tradicional escolástica, elaboraram uma série de críticas quanto à maneira como Descartes concebia a natureza dos corpos e explicava os fenômenos naturais. Libert Froidmont, um de seus primeiros críticos, elaborou um conjunto de objeções contra A dióptrica e, principalmente, contra Os meteoros. Este artigo visa analisar alguns aspectos (...) sobre o debate entre Descartes e Froidmont concernente às hipóteses mecanicistas sustentadas pelo primeiro. (shrink)

Originally published in 1996, this book presents and analyses children’s reasonings about fundamental metaphysical problems. The first part describes dialogues with children that were constructed on the basis of Descartes’ _Mediations on First Philosophy_ and which look at children’s ideas about the relationships between true and false knowledge, mental images and physical objects, mind and body, personal existence and the external world, dreams and reality, and the existence of the Supreme Being, among others. The second part of the book draws (...) on concepts that children of various ages have about psychological and metapsychological aspects of human reality such as: cognitive and moral development; personal freedom and responsibility; the relationships between conscious and unconscious; living and non-living; and about the fundamental drives of an individual for development and expansion of his or her needs and passions, for eternal life, and for the dreamlike world of fulfilled wishes. The book presents a systematic empirical and theoretical study of the problems, some of which were touched on in Piaget’s early writing but which he later abandoned and which were only sporadically illuminated by other authors, whereas others were completely new to research in developmental psychology at the time. It will still be a helpful guide for developmental psychologists, teachers, educationalists, social workers, lawyers, and other professionals interested in the knowledge that 4- to 14-year-old children have about the most fundamental aspects of reality and human beings. (shrink)

This version has been superseded by the one published in Spring, 2014.