Through the reconstruction of Leibniz's theory of the degrees of knowledge, this e-book investigates and explores the intrinsic relationship of imagination with space and time. The inquiry into this relationship defines the logic of imagination that characterizes both human and non-human animals, albeit differently, making them two different species of imaginative animals. -/- Lucia Oliveri explains how the emergence of language in human animals goes hand in hand with the emergence of thought and a different form of rationality constituted by (...) logical inferences based on identity and contradiction, principles that are out of reach of the imagination. The e-book concludes that the presence of innate principles in human animals transforms the way in which they sense-perceive the world, thereby constantly increasing the distinction between human and non-human animals. -/- Keywords: human and non-human animals, Leibniz and Locke on ideas, Leibniz on bodies, Leibniz on conceivability, Leibniz on degrees of knowledge, Leibniz on degrees of perception, Leibniz on innate ideas, Leibniz on modality, Leibniz on similarity and congruence, Leibniz on space and time, Leibniz’s philosophy of language, theory of types. (shrink)

L’imagination joue un rôle crucial et pourtant équivoque dans la théorie des passions de Descartes ainsi que dans celle de Hobbes. En dépit de sa réduction de l’imagination au corps, Descartes explique l’affectivité de l’âme comme le résultat complexe de l’interdépendance de la pensée et de l’imagination. Hobbes, d’un autre côté, réfute tout dualisme entre passions corporelles et volonté ; toutefois, il décrit les passions de l’esprit comme causées par une imagination « mentale » qui regarde au possible et à (...) l’avenir. Cette contribution étudie les ramifications d’une telle « pensée imaginative » dans les anthropologies morales de Descartes et de Hobbes. (shrink)

In this paper, I argue that Descartes developed an early theory of happiness, which he rhetorically claimed to have stemmed from his choice of vocation in 1619. I provide a sketch of his theory in the Discours, noting, however, some problems with the historicity of the text. I then turn to his Olympica and associated writings that date from this period, where he literally asked, “What way in life shall I follow?” I take Descartes’ dreams as allegorical and provide an (...) interpretation of his curious claim that poets are better equipped to discover truth than philosophers, made at a time when he chose to become a philosopher and not a poet. My way out of this conundrum is to identify in this text a philosophical psychology that I argue is consistent with the Regulae and the Discours, is part of what he took to be his “foundation of the wonderful science,” and is the essence of his early theory of happiness. (shrink)

In this paper, I address two widespread misconceptions about Descartes’s theory of love. Descartes defines love as a passion that ‘incites [the soul] to join in volition to the objects that appear to be suitable to it’. Several commentators assume joining in volition is an act of judgment, since forming judgments is the primary function of the will in the Meditations. However, I argue joining in volition is an act of imagining a whole one forms with an object of love. (...) I draw on Descartes’s account of volition in The Passions of the Soul to show forming images in one’s mind qualifies as a volition, on his view. Second, commentators often assume joining in volition is an essential part of love. However, I argue joining in volition is not an essential part of love because love is not identical to joining in volition, and love does not necessitate the soul to join in volition. (shrink)

The aim of this article is to clarify an aspect of Descartes’s conception of mind that seriously impacts on the standard objections against Cartesian dualism. By a close reading of Descartes’s writings on imagination, I argue that the capacity to imagine does not inhere as a mode in the mind itself, but only in the embodied mind, that is, a mind that is not united to the body does not possess the faculty to imagine. As a mode considered as a (...) general property, and not as an instance of it, belongs to the essence of the substance, and as imagination (like sensation) arises from the mind-body union, then the problem arises of knowing to what extent a Cartesian embodied mind is separable from the body. (shrink)

The aim of this thesis is to investigate the role that the imagination plays in the later philosophy of René Descartes. The thesis will look at two related questions: the status of the imagination as a mode of thought dependent on the body; the role of the imagination in object-perception. Throughout, the traditional view of Descartes as a Cartesian Dualist is rejected and a more holistic approach is taken towards the relationship between mind and body, in which Descartes’ claims that (...) the two make up a “substantial union” are taken seriously. Part One deals with the relationship between mind and body. I argue that Cartesian Dualism cannot account for the faculties of sensation and imagination, because they have a corporeal basis. However, the ‘union of mind and body’, Descartes’ device for explaining their interaction, can. I end Part One by identifying a problem with the paradigm case of mind-body interaction, object-perception. To determine the object of an idea there needs to be a mechanism to marry the two ingredients of perception: the innate ideas of geometry in the intellect, and ‘adventitious’ ideas of the object delivered by the senses. Otherwise we have no explanation for how the essentially ‘inward-looking’ intellect can apply its ideas to the essentially passive sensations. Part Two focuses on the imagination and the question of object-perception raised in Part One. I argue against the largely-held view in the secondary literature that, with the advent of the cogito, the imagination’s cognitive profile declined sharply. I argue that, in fact, the corporeal basis of the imagination places it beautifully to bridge the gap in object-perception, and that this is part of its role in all Descartes’ discussions on the topic. The other, related, role of the imagination is to conjure fictions and hypotheses, suiting it for scientific and epistemological endeavours. The fact that the imagination is not tied to what is present to the senses, even though it receives its original content from them, means that it can manipulate ideas of corporeal things; including the innate notions of extension, shape and motion so key to gaining a clear and distinct idea of matter. (shrink)

There are two standing, incompatible accounts of Descartes’ contributions to the study of psychosomatic phenomena that pervade histories of medicine, psychology, and psychiatry. The first views Descartes as the father of “rational psychology” a tradition that defines the soul as a thinking, unextended substance. The second account views Descartes as the father of materialism and the machine metaphor. The consensus is that Descartes’ studies of optics and motor reflexes and his conception of the body-machine metaphor made early and important contributions (...) to physiology and neuroscience but otherwise his impact was minimal. These predominately negative assessments of Descartes’ contributions give a false impression of the role his philosophy played in the development of medicine and psychiatry in seventeenth-century France and beyond. I explore Descartes’ influence in the little-known writings of a doctor from Toulouse, and . A study of Bayle gives us occasion to rethink the nature and role of psychosomatic explanation in Descartes’ philosophy. The portrait I present is of a Cartesian science that had an actual and lasting effect on medical science and practice, and may offer something of value to practitioners today. (shrink)