Cette édition numérique a été réalisée à partir d'un support physique, parfois ancien, conservé au sein du dépôt légal de la Bibliothèque nationale de France, conformément à la loi n° 2012-287 du 1er mars 2012 relative à l'exploitation des Livres indisponibles du XXe siècle. Douze études portant sur divers points cruciaux d'interprétation de la science et de la métaphysique cartésiennes et leibniziennes. « Copyright Electre » Pages de début Préface Sigles utilisés pour les références aux sources principales I - L'ingenium (...) selon Descartes et le chiffre universel des Règles pour la direction de l'esprit II - La géométrisation du regard. Réflexions sur la Dioptrique de Descartes III - La « Fable du Monde » et la signification métaphysique de la science cartésienne IV - L'origine de la négation V - Leibniz et l'universel VI - De l'individuation à l'individualité universelle VII - Mécanisme et métaphysique : le rétablissement des formes substantielles (1679) VIII - De la puissance à l'action : la singularité stylistique de la dynamique IX - La notion de système dans la physique de Leibniz X - « Pour la beauté et pour l'harmonie » : le meilleur de la dynamique XI - Les axiomes de l'identité et la démonstration des formules arithmétiques : "2 + 2 = 4" XII - Leibniz et l'exigence de démonstration des axiomes : "La partie est plus petite que le Tout" XIII - Ernst Cassirer et les commencements de la science classiqueIndications bibliographiques Index nominum Pages de fin. (shrink)

Toujours, dans toute proposition affirmative veritable, necessaire ou contingente, universelle ou singuliere, la notion du predicat est comprise en quelque facon dans celle du sujet, praedicatum inest subjecto, ou bien je ne sais ce que c'est que la vetite. Parce qu'elles mettaient principalement l'accent sur les liaisons conceptuelles, les precisions de ce genre ont ete interpretees comme autant d'indices permettant de reconstituer le contenu du predicat de verite a partir de presupposes coherentistes. Dans le concensus qui s'est etabli sur ce (...) point, le role hermeneutique tres excessif accorde a la notion de systeme a eu une portee aussi considerable que le contenu des quelques textes generalement allegues. Si on admet, au contraire, qu'il y a bien une doctrine leibnizienne de la verite, alors on est amene a inscrire la position de Leibniz dans le contexte du debat relatif a l'adaequatio rei et a souligner davantage ce qui l'apparente a une theorie de la verite-correspondance. Cet argument principal est soutenu par des analyses de detail dans la logique. Un attention particuliere est apportee aux valeurs des variables du nouveau calcul, a la fonction du predicat de possibilite, au probleme relatif a la constantia subjecti et au statut des entites intensionnelles. L'image de l'ontologie leibnizienne s'en trouve modifiee et precisee: a la fois possibiliste et factualiste, elle est traversee de tensions importantes et occupe une place tout a fait singuliere dans cette partie de la philosophie qui connait aujourd'hui un si profond renouveau. (shrink)

This book, first published in 1975, provides critical and comprehensive introduction to the philosophy of Leibniz.

There is in the New Essays a prominent line of argument that Leibniz took to have remarkable scope. If it works, it sweeps away most of the mainstays of Locke’s metaphysics: atoms, vacuum, real space and time, absolute rest, inactive faculties, and the tabula rasa. It alone does not suffice to undermine the possibility of thinking matter, but it contributes support to that most important of Leibniz’s claims against Locke. Because it is so central to the project of New Essays, (...) I am going to focus mainly on the argument as it is employed there; doing so illuminates both the work and the argument. But Leibniz used it a number of times in letters and notes from roughly the same time period and it is related to a thesis in the Discourse on Metaphysics and letters to Arnauld. The argument invokes a distinction between abstract or incomplete entities and concrete or complete ones. Its premises are that atoms, vacuum, inactive substances, and other items on Leibniz’s list are homogeneous or uniform; that all things that are uniform or otherwise exactly alike are abstract; and that nothing abstract can be found in nature. (shrink)

Locke, Leibniz, and the Logic of Mechanism MARTHA BRANDT BOLTON l~ EARLY MECHANIST PHILOSOPHERS demanded a new standard of perspicuity in the natural sciences. They accused others of "explaining" phenomena in terms of obscurely defined, unconfirmed, and uninformative causes. These complaints were leveled, not just at the real qualities and forms of Scholastics, but also against the sympathetic attractions of Hermetics and the sophic prin- ciples of the Spagyrites. These competitors to mecha- nism could at best demonstrate that a certain (...) effect occurs and claim to state why it does. Mechanists aspired to explain how phenomena are produced. 1 Beyond that, however, philosophers in the broadly "mechanist" movement shared no single account of what this sort of explanation involves. They were too diverse, not only in their views on the central notions of material sub- stance, cause, and force, but also with respect to their standards of intelligibil- ity. In this paper, however, I want to isolate one mechanist model of explana- tion with intellectual virtues that strongly recommended it in some quarters. I will argue specifically that it influenced Leibniz and Locke. This favored form of mechanism opens a deep problem, because it con- flicts with the existence of causal interaction between bodies and minds. 2 It is not just that the model does not apply beyond the realm of intercorporeal ' Much of the work of documenting this trait.. (shrink)

In my introduction to Kontinuität und Mechanismus, I expressed surprise at the lack of work which was being done at the time on the young Leibniz in spite of the fact that conditions for investigating the period up to 1676 are almost ideal—certainly in Leibnizian terms. Most of the letters and papers from this period of immediate philosophical significance have now been published in the Akademie-Ausgabe so that there is here an incomparably better starting point for detailed studies than in (...) the case of his later work. (shrink)

Throughout his long intellectual life, Leibniz penned his reflections on Christian theology, yet this wealth of material has never been systematically gathered or studied. This book addresses an important and central aspect of these neglected materials—Leibniz’s writings on two mysteries central to Christian thought, the Trinity and the Incarnation. -/- From Antognazza’s study emerges a portrait of a thinker surprisingly receptive to traditional Christian theology and profoundly committed to defending the legitimacy of truths beyond the full grasp of human reason. (...) This view of Leibniz differs strikingly from traditional perceptions of the philosopher as a “hard” rationalist and quasi-deist. Antognazza also sets Leibniz’s writings in the context of the important theological controversies of his day. (shrink)

Le statut des corps dans la metaphysique de Leibniz continue de resister a tout effort de reconstitution. Qu'il n'y ait au monde que les substances simples et leurs modifications ne presente plus l'evidence d'une position philosophique achevee. Dans le meilleur des mondes possibles, les ames ne sont jamais sans corps et la moindre portion de matiere renferme un univers de creatures vivantes. Au moment meme ou Leibniz semble embrasser une position idealiste en peuplant le monde d'une infinite d'entites psychiques, ne (...) developpe-t-il pas le concept d'organisme comme en marge de cette metaphysique? Deja, dans les annees ou la celebre theorie de la notion complete servait a penser la substance individuelle, la realite du corps organique imposait l'idee d'une substantialite proprement corporelle. Composition infinie irreductible aux modalites de l'etendue, le corps organique, machine de la nature, force a repenser les conditions d'existence de l'individualite vivante, dont l'ego cartesien n'est plus qu'une problematique modele. La question n'est plus tant de savoir si Leibniz a admis l'existence de substances corporelles en sus des monades, que de comprendre en quoi la realite organique devient le modele pour penser la connexion de toutes les substances, des simples aux composees, des brutes aux raisonnables. Du moi a la monade, comment la necessaire inscription corporelle de l'individualite s'opere-t-elle? De quelles modifications du concept de substance cette exigence s'accompagne-t-elle? (shrink)

The essays included in this volume are a mixture of old and new. Three of them make their first appearance in print on this occa sion (Nos III, IV, and V). The remaining four are based upon materials previously published in learned journals or anthologies. (However, these previously published papers have been revised and, generally, expanded for inclusion here.) Detailed acknowl edgement of prior publications is made in the notes to the relevant articles. I am grateful to the editors of (...) these several publications for their kind permission to use this material. I am grateful to an anonymous reader for the Western Ontario Series for some useful corrigenda. And I should like to thank John Horty and Lily Knezevich for their help in seeing this material through the press. NICHOLAS RESCHER Pittsburgh, Pennsylvania May, 1980 xi INTRODUCTION The unifying theme of these essays is their concern with Leibniz's metaphysics of nature. In particular, they revolve about his cos mology of creation and his conception of the real world as one among infinitely many equipossible alternatives. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain (...) in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Broad, C. D. Leibniz's predicate-in-notion principle and some of its alleged consequences.--Couturat, L. On Leibniz's metaphysics.--Friedrich, C. J. Philosophical reflections of Leibniz on law, politics, and the state.--Curley, E. M. The root of contingency. Furth, M. Monadology.--Hacking, I. Individual substance.--Hintikka, J. Leibniz on plenitude, relations, and the "reign of law."--Ishiguro, H. Leibniz's theory of the ideality of relations.--Kneale, M. Leibniz and Spinoza on activity.--Koyré, A. Leibniz and Newton.--Lovejoy, A. O. Plenitude and sufficient reason in Leibniz and Spinoza.--Mates, B. Leibniz on (...) possible worlds.--Russell, B. Recent work on the philosophy of Leibniz.--Wilson, M. D. On Leibniz's explication of "necessary truth.". (shrink)

This study of the metaphysics of G. W. Leibniz gives a clear picture of his philosophical development within the general scheme of seventeenth-century natural philosophy. Catherine Wilson examines the shifts in Leibniz's thinking as he confronted the major philosophical problems of his era. Beginning with his interest in artificial languages and calculi for proof and discovery, the author proceeds to an examination of Leibniz’s early theories of matter and motion, to the phenomenalistic turn in his theory of substance and his (...) subsequent de-emphasis of logical determinism, and finally to his doctrines of harmony and optimization. Specific attention is given to Leibniz’s understanding of Descartes and his successors, Malebranche and Spinoza, and the English philosophers Newton, Cudworth, and Locke. Wilson analyzes Leibniz’s complex response to the new mechanical philosophy, his discontent with the foundations on which it rested, and his return to the past to locate the resources for reconstructing it. She argues that the continuum-problem is the key to an understanding not only of Leibniz’s monadology but also of his views on the substantiality of the self and the impossibility of external causal influence. A final chapter considers the problem of Leibniz-reception in the post-Kantian era, and the difficulty of coming to terms with a metaphysics that is not only philosophically "critical" but, at the same time, “compensatory.” Originally published in 2050. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905. (shrink)

"The development of the calculus during the 17th century was successful in mathematical practice, but raised questions about the nature of infinitesimals: were they real or rather fictitious? This collection of essays, by scholars from Canada, the US, Germany, United Kingdom and Switzerland, gives a comprehensive study of the controversies over the nature and status of the infinitesimal. Aside from Leibniz, the scholars considered are Hobbes, Wallis, Newton, Bernoulli, Hermann, and Nieuwentijt. The collection also contains newly discovered marginalia of Leibniz (...) to the writings of Hobbes."--BOOK JACKET. (shrink)

Leibniz entertained the idea that, as a set of “striving possibles” competes for existence, the largest and most perfect world comes into being. The paper proposes 8 criteria for a Leibniz-world. It argues that a) there is no algorithm e.g., one involving pairwise compossibility-testing that can produce even possible Leibniz-worlds; b) individual substances presuppose completed worlds; c) the uniqueness of the actual world is a matter of theological preference, not an outcome of the assembly-process; and d) Goedel’s theorem implies that (...) there can be no algorithm for producing optimal worlds, assuming an optimal world contains truth-discerning creatures, though this is not to say that such worlds cannot arise naturally. (shrink)

IDEAS. and. MECHANISM. Essays on Early Modern Philosophy MARGARET DAULER WILSON For more than three decades, Margaret Wilson's essays on early modern philosophy have influenced scholarly debate. Many are considered  ...

Though it did not yet exist as a discrete field of scientific inquiry, biology was at the heart of many of the most important debates in seventeenth-century philosophy. Nowhere is this more apparent than in the work of G. W. Leibniz. In Divine Machines, Justin Smith offers the first in-depth examination of Leibniz's deep and complex engagement with the empirical life sciences of his day, in areas as diverse as medicine, physiology, taxonomy, generation theory, and paleontology. He shows how these (...) wide-ranging pursuits were not only central to Leibniz's philosophical interests, but often provided the insights that led to some of his best-known philosophical doctrines.Presenting the clearest picture yet of the scope of Leibniz's theoretical interest in the life sciences, Divine Machines takes seriously the philosopher's own repeated claims that the world must be understood in fundamentally biological terms. Here Smith reveals a thinker who was immersed in the sciences of life, and looked to the living world for answers to vexing metaphysical problems. He casts Leibniz's philosophy in an entirely new light, demonstrating how it radically departed from the prevailing models of mechanical philosophy and had an enduring influence on the history and development of the life sciences. Along the way, Smith provides a fascinating glimpse into early modern debates about the nature and origins of organic life, and into how philosophers such as Leibniz engaged with the scientific dilemmas of their era. (shrink)

What did Leibniz have to contribute to the philosophy of mind? To judge from textbooks in the philosophy of mind, and even Leibniz commentaries, the answer is: not much. That may be because Leibniz’s philosophy of mind looks roughly like a Cartesian philosophy of mind. Like Descartes and his followers, Leibniz claims that the mind is immaterial and immortal; that it is a thinking thing ; that it is a different kind of thing from body and obeys its own laws; (...) and that it comes stocked with innate truth-tracking intellectual ideas and an epistemically troubling habit of forming confused sensory ideas on the occasion of external corporeal events. Nothing is new. Of course, Leibniz adds unconscious perceptions to the mind in the form of his famous petites perceptions, and he offers a unique solution to the problem of mind-body interaction in the form of his infamous pre-established harmony. In the overall scheme of things, however, these look like minor alterations in a philosophy of mind that the Cartesians had been advocating for some fifty years. Or so it appears. (shrink)

In Section 21 of his fifth letter to Clarke Leibniz attempts to derive the Identity of Indiscernibles from an application of the Principle of Sufficient Reason to God´s act of creation, namely that God has a reason to create the world he creates. In this paper I argue that this argument fails, not just because the Identity of Indiscernibles is false, but because there is a counterexample to one of the premises that Leibniz cannot satisfactorily rule out.

Résumé L’article cherche à montrer comment l’usage du motif médiéval de la mesure du réel ou encore de la latitude des formes dans la Dynamique de Leibniz permet de comprendre les variations perceptives à l’œuvre dans la substance. La singularité d’une substance peut alors se lire à partir de sa quantité de perfection.

Leibniz has almost universally been represented as denying that created substances, including human minds and the souls of animals, can causally interact either with one another or with bodies. Yet he frequently claims that such substances are capable of interacting in the special sense of what he calls 'ideal' interaction. In order to reconcile these claims with their favored interpretation, proponents of the traditional reading often suppose that ideal action is not in fact a genuine form of causation but instead (...) a merely apparent influence which serves to 'save the appearances.' I argue that this traditional reading distorts Leibniz's thought and that he actually considers ideal action a genuine (though non-standard) form of causation. (shrink)

According to a common reading, Spinoza and Leibniz stand on opposite ends of the modal spectrum. At one extreme lies ‘‘Spinoza the necessitarian,’’ for whom the actual world is the only possible world. At the other lies ‘‘Leibniz the anti-necessitarian,’’ for whom the actual world is but one possible world among an infinite array of other possible worlds; the actual world is privileged for existence only in virtue of a free decree of a benevolent God. In this paper, I challenge (...) both of these readings. Spinoza is no necessitarian and Leibniz is no anti-necessitarian – at least as these characterizations are usually understood. Rather, I contend, Spinoza and Leibniz are both anti-essentialists; they believe that the modality of objects can vary relative to how those objects are conceived. This shared commitment to anti-essentialism allows them to consistently affirm both necessitarianism and its denial, relative to different ways of conceiving the world. Their embrace of this modal theory, I further argue, is grounded in their similar views on metaphysical perfection, ontological plentitude, and the principle of sufficient reason. (shrink)

Leibniz speaks, in a variety of contexts, of there being two realms—a "kingdom of power or efficient causes" and "a kingdom of wisdom or final causes." This essay explores an often overlooked application of Leibniz's famous "two realms doctrine." The first part turns to Leibniz's work in optics for the roots of his view that nature can be seen as being governed by two complete sets of equipotent laws, with one set corresponding to the efficient causal order of the world, (...) and the other to its teleological order. The second part offers an account of how this picture of lawful over-determination is to be reconciled with Leibniz's mature metaphysics. The third addresses a line of objection proposed by David Hirschmann to the effect that Leibniz's doctrine undermines his stated commitment to an efficient, broadly mechanical account of the natural world. Finally, the fourth part suggests that Leibniz's thinking about the harmony of final and efficient causes in connection with corporeal nature may help to shed light on his understanding of the teleological unfolding of monads as well. (shrink)

In this article, I discuss Leibniz's interpretation of the cosmological argument for the existence of God. In particular, I consider whether Leibniz's position on this point was developed partly in reference to Spinoza's position. First, I analyze Leibniz's annotations from 1676 on Spinoza's Letter 12. The traditional cosmological argument, as found in Avicenna and Saint Thomas for example, relies on the Aristotelian assumption that an actual infinite is impossible and on the idea that there can be no effect without a (...) cause. From these premises, the argument concludes that God must be the uncaused first cause of all things. In Letter 12, Spinoza follows Chasdai Crescas and rejects this proof. Instead, he develops a variant of the cosmological argument which depicts God as the self-caused ground of all causes or things. In his annotations, Leibniz agrees with Spinoza about the inadequacy of the traditional argument, but remains ambiguous as to Spinoza's conception of God as a self-caused being. Next, I turn to Leibniz's comments from 1678 on Spinoza's Ethics. Here, Leibniz develops an original interpretation of the cosmological argument based entirely on the consideration of conceptual relations. Leibniz's argument depicts God as an uncaused being conceived through itself which is the condition of conceivability of all things. I argue that Leibniz developed this argument in deliberate opposition to Spinoza's conception of God as the self-caused ground of all causes or things. (shrink)

I shall proceed in the following way. In parts II and III of this paper, I shall discuss the strengths and weaknesses of the interpretation put forward by Robert Merrihew Adams in his recent book, and I shall expand upon this account, discussing a crucial but hitherto unexamined aspect of the relation between dominant and subordinate monads, reconstructed from Leibniz's letters to Des Bosses and his essays of 1714, _Principles of Nature and Grace and Monadology. In part IV of this (...) paper, I shall examine various difficulties that arise both for my interpretation and, more generally, for Leibniz's account of the relation of domination and subordination. (edited). (shrink)

This paper addresses D. C. Williams’s question, “How can Leibniz know that he is a member of the actual world and not merely a possible monad on the shelf of essence?” A variety of answers are considered. Ultimately, it is argued that no particular perception of a state of affairs in the world can warrant knowledge of one’s actuality, nor can the awareness of any property within oneself; rather, it is the nature of experience itself, with the flow of perceptions, (...) that guarantees our actuality. A consequence of this view is that no non-actual individuals can truly be said to experience their worlds, nor can they ask the question if they are actual or not. (shrink)

According to the standard view of his metaphysics, Leibniz endorses idealism: the thesis that the world is made up solely of minds or monads and their perceptual and appetitive states. Recently,this view has been challenged by some scholars, who argue that Leibniz can be seen as admitting corporeal substances, that is, animals or embodied souls, into his ontology, and that, therefore, it is false to attribute a strict idealism to him. Subtler accounts suggest that Leibniz begins his philosophical career as (...) an advocate of (some form of) the modern ‘mechanical’ philosophy and ends his career as an idealist, raising the issue when and why Leibniz adopts his monadological metaphysics. This article argues that, given a constellation of metaphysical, logical, and theological views, Leibniz is committed to the ontological primacy of mind or form even in his ‘middle years’. (shrink)

Leibniz’s reasons for rejecting materialism are complex and often rely on assumptions that are deeply puzzling to contemporary philosophers. However, the discussion of these issues in § 17 of the Monadology has received a lot of attention over the past couple of decades. For it is here that Leibniz presents the most well known version of his “mill argument.”.