Brandon Look

In a short piece written most likely in the 1690s and given the title by Loemker of “On Wisdom,” Leibniz says the following: “...we see that happiness, pleasure, love, perfection, being, power, freedom, harmony, order, and beauty are all tied to each other, a truth which is rightly perceived by few.”1 Why is this? That is, why or how are these concepts tied to each other? And, why have so few understood this relation? Historians of philosophy are familiar with the fact that both Spinoza and Leibniz place strong emphasis on the notion of power in giving their accounts of the human passions. But, while many scholars have explicated the relation between power and the passions (especially in Spinoza’s philosophy), there has been considerably less attention given to the nature of perfection and its relation to both power and the passions.2 Consider the following passages from Spinoza and Leibniz in which these two thinkers seem to bring together the issue of perfection and passion. In Ethics IIIp11s, Spinoza says the following: We see, then, that the Mind can undergo great changes, and pass now to a greater, now to a lesser perfection. These passions, indeed, explain to us the affects of Joy and Sadness. By Joy, therefore, I shall understand in what follows that passion by which the Mind passes to a greater perfection. And by Sadness, that passion by which it passes to a lesser perfection. The affect of Joy which is related to the Mind and Body at once I call Pleasure or Cheerfulness, and that of Sadness, Pain or Melancholy.3 And, in the Monadology §49, Leibniz says this: “The creature is said to act externally insofar as it is perfect, and to be acted upon [patir] by another, insofar as it is imperfect.”4 In other words, for Spinoza, the primitive passions of joy and sadness are cases in which a being’s perfection is increasing or decreasing, while, for Leibniz, any passion, it would..

One of the more interesting topics debated by Leibniz and Locke and one that has received comparatively little critical commentary is the nature of essences and the classification of the natural world.1 This topic, moreover, is of tremendous importance, occupying a position at the intersection of the metaphysics of individual beings, modality, epistemology, and philosophy of language. And, while it goes back to Plato, who wondered if we could cut nature at its joints, as Nicholas Jolley has pointed out, the debate between Leibniz and Locke has very clear similarities to the topic that has dominated the philosophy of language from the 1970s on: namely, the challenge mounted by Kripke, Kaplan, Putnam, and others against Russellian and Fregean descriptivist accounts of meaning. Yet, this topic is also, as Jolley writes, one of the “most elusive” in the debate between Leibniz and Locke.2 The purpose of this paper is to examine in detail Leibniz’s critique of Locke’s distinction between real and nominal essences. In doing so, I hope to show certain virtues in Leibniz’s account of metaphysics and philosophy of language that usually escape notice. While I wish to provide a general account of Leibniz’s disagreement with Locke, I also plan to focus on the nature of species and natural kinds. In my opinion, those who have treated this topic have not paid sufficient attention to Leibniz’s claims that “Essence is fundamentally nothing but the possibility of the thing under consideration” and “essences are everlasting because they only concern.

Kant’s Thinker is an excellent and important addition to the literature. In it, Patricia Kitcher aims at arriving at a comprehensive understanding of Kant’s theory of the cognitive subject. To this end, she analyzes a central component of the most notoriously difficult part of the Critique of Pure Reason, the theory of the unity of apperception in the chapter on the Transcendental Deduction of the Categories. In Kitcher’s view, the ultimate payoff of such a study is that Kant’s theory can “provide a ‘new’ source of illumination for current attempts to understand the nature of cognition and the mind” (3). This may be so. But the main value of the book will likely be for Kant scholars, who will appreciate the depth ..

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 39.3 (2001) 440-442 [Access article in PDF] Reinhard Lauth. Descartes ' Konzeption des Systems der Philosophie. Stuttgart (Bad Cannstatt): Frommann-Holzboog, 1998. Pp. x + 227 pp. Cloth, DM 64.00. Reinhard Lauth's Descartes ' Konzeption des Systems der Philosophie is an interesting addition to the literature on Descartes. Written by a renowned scholar of German Idealism, it does not represent an attempt to respond to scholars of Descartes, to take part in the debate regarding aspects of Descartes's philosophy, nor to explain the role of Descartes's thought in the tumultuous seventeenth century, but rather to explain to scholars of German Idealism why Descartes should be considered the first and one of the greatest transcendental philosophers. It is no accident that in the index we find close to 50 references each to Kant and Fichte, while Descartes's important "rationalist" comrades, Spinoza and Leibniz, receive half as much attention; nor is it an accident that the first and last philosopher mentioned in the book is Fichte.Lauth's book is in the tradition of Gueroult's monumental Descartes selon l ' ordre des raisons (Paris, 1968, 2nd edition) and, as the title indicates, the subject of the book is Descartes's philosophy as a system, not as a collection of independent theses about various philosophical problems. However, unlike Gueroult, who concentrated on an [End Page 440] analysis of the Meditations, Lauth draws extensively on the Rules for the Direction of the Mind, Discourse on Method, Meditations, and Descartes's correspondence. That Descartes viewed philosophy as ideally constituting a system of human knowledge should not come as news to anyone who recalls Descartes's claim in the Preface to the Principles of Philosophy that all of philosophy is like a tree whose roots are metaphysics, trunk physics, and branches medicine, mechanics, and morals, or his claim in the Preface to the Meditations that there is a clear order of argumentation or reasons and that his goal is to lay bare the foundations of philosophy. How exactly Descartes's philosophy is to constitute a system is the trickier question that is Lauth's concern.According to Lauth, the order of reasons that one finds expressed in Descartes's first philosophy is not simply a series of biographical events, filling a psychological need in Descartes (cf. Alquié, La Découverte métaphysique de l ' homme chez Descartes [Paris, 1966]), but rather the "systematic path of the cogito itself" (X). And Lauth attempts to show that there is something inexorable in the way that conclusions about the world from the point of view of the thinking subject are made and follow from one another. This takes him along the well-known path of the Meditations: from the existence of the self, to the nature of the self, to the existence and nature of God, to the external world, and finally to the relation of mind and body. And here two interesting observations on Lauth's part should be singled out. First, Lauth does an admirable job in intimating the tension regarding the places of the thinking subject and God as the supreme principles in Descartes's system. On the one hand, it would seem that the thinking subject should be the highest principle in Descartes's philosophy insofar as its existence is the first thing known; but, according to Lauth, it cannot be the highest principle because it does not contain the principle of its own existence (76). On the other hand, if we claim that God is the highest principle then we must recognize that a system following from this principle must fail insofar as genuine knowledge of God surpasses the bounds of our finite, human knowledge (99-100). Second, in claiming that Descartes was a "transcendental philosopher," Lauth reminds us of the extent to which Descartes is concerned with the bounds of human knowledge as determinable from the thinking subject itself.While this work contains many useful insights—especially for those scholars of German Idealism who are looking for new ways of reflecting on their subject—it has...