This landmark book is now reissued in a new edition that has been vastly rewritten and updated to respond to recent Kantian literature.

This book is a defense of modal realism; the thesis that our world is but one of a plurality of worlds, and that the individuals that inhabit our world are only a few out of all the inhabitants of all the worlds. Lewis argues that the philosophical utility of modal realism is a good reason for believing that it is true.

"This is an important book, and no one interested in issues which touch on the free will will want to ignore it."--Ethics. In this stimulating and thought-provoking book, the author defends the thesis that free will is incompatible with determinism. He disputes the view that determinism is necessary for moral responsbility. Finding no good reason for accepting determinism, but believing moral responsiblity to be indubitable, he concludes that determinism should be rejected.

Tn this paper I explore and to an extent defend HS. The main philosophical challenges to HS come from philosophical views that say that nomic concepts-laws, chance, and causation-denote features of the world that fail to supervene on non-nomic features. Lewis rejects these views and has labored mightily to construct HS accounts of nomic concepts. His account of laws is fundamental to his program, since his accounts of the other nomic notions rely on it. Recently, a number of philosophers have (...) criticized Lewis's account, and Humean accounts of laws generally, for delivering, at best, a pale imitation ofthe genuine item. These philosophers think that the notion of law needed by science requires laws-if there are any-to be fundamental features of our world that are completely distinct from and not supervenient on the particular facts that they explain. I side with Lewis against these philosophers. Here I will argue that although Lewis-laws don't fulfill all our philosophical expectations, they do play the roles that science needs laws to play. The metaphysics and epistemology of Humean laws, and more specifically, Lewis-laws, are in much better shape than the metaphysics and epistemology of the main anti-Humean alternatives. However, I do have inisgivings about Lewis's account. Both he and his critics assume that the basic properties are so individuated so that the laws are not metaphysically necessary. If this assumption is rejected, then the question of Humean supervenience lapses. I conclude with a brief discussion of this position. (shrink)

Discusses the incompatibility of the concepts of free will and determinism and argues that moral responsibility needs the doctrine of free will.

I begin this study with a review of the 18th-century figures, Leibniz, Wolff, Crusius, Hume and the pre-critical Kant concerning causation, free will and compatibilism. This review provides the background for an investigation into and a reconstruction of Kant's thesis of the compatibility of causal determinism and human freedom. I formulate Kant's argument for causal determinism and present his defense of that argument, devoting an extended discussion to the recent literature regarding its key premise, the Law of Universal Causation. Then (...) I identify and analyze two senses of 'will', the legislative function of practical reason and the executive function of the power of choice, and four senses of 'freedom of the will', spontaneity, independence, autonomy and heteronomy. ;On the strength of these discussions, I attribute to Kant the views that causal determinism obtains and that human beings have free will. After considering and finding unsatisfactory the traditional readings of Kant's resolution of the apparent incompatibility of these two theses, I explicate Kant's often misunderstood distinction between things in themselves and appearances. On the basis of the features of this distinction together with my exposition of Kant's theory of freedom, I ascribe to Kant a token-token identity thesis regarding human actions and natural events, but a type-type irreducibility thesis regarding the sorts of descriptions applicable to human actions and natural events. The consequent compatibilist resolution, in addition to furnishing a way of reading problematic passages underlying standard incompatibilistic interpretations, yields a compatibilism which neither sacrifices the epistemology of the Critique of Pure Reason, nor leaves Kant with only an impoverished theory of human free will. ;Finally, I bring the results of this inquiry into the current debate over the problem of freedom and determinism. Specifically, for the purpose of providing Kantian critiques of current positions and current critiques of the Kantian position, I place Kant's view of token-token identity and type-type irreducibility within the context of contemporary philosophy of mind, aligning him with philosophers who share not only his compatibilism, but also, to a surprising degree, the particulars of his version of compatibilism. (shrink)

Lucy Allais presents an original interpretation of Kant's transcendental idealism. She argues that his distinction between things in themselves and things as they appear to us has both epistemological and metaphysical components. Kant is committed to a genuine idealism about things as they appear to us, but this is not a phenomenalist idealism. He is committed to the claim that there is an aspect of reality that grounds mind-dependent spatio-temporal objects, and which we cannot cognize, but he does not assert (...) the existence of distinct non-spatio-temporal objects. On Allais's account, we cannot understand Kant's idealism without a clear account of his notion of intuition and of the role of intuition in cognition: she understands Kantian intuitions as representations that give us acquaintance with the objects of thought. This enables us to make sense of Kant's central argument for his idealism in the Transcendental Aesthetic, and to see why he takes the complete idealist position to be established there. (shrink)

James Van Cleve examines the main topics from Kant's Critique of Pure Reason, such as transcendental idealism, necessity and analyticity, space and time, substance and cause, noumena and things-in-themselves, problems of the self, and rational theology. He also discusses the relationship between Kant's thought and that of modern anti-realists, such as Putnam and Dummett. Because Van Cleve focuses upon specific problems rather than upon entire passages or sections of the Critique, he makes Kant's work more accessible to the serious student (...) and scholar. (shrink)

Absolute identity seems at first sight to be presupposed in the branch of formal logic called identity theory. Classical identity theory may be obtained by adjoining a single schema to ordinary quantification theory.

The distinction at the heart of Kant's philosophy is a metaphysical distinction: things in themselves are substances, bearers of intrinsic properties; phenomena are relational properties of substances. Kant says that things as we know them are composed "entirely of relations", by which he means forces. Kant's claim that we have no knowledge of things in themselves is not idealism, but humility: we have no knowledge of the intrinsic properties of substances. Kant has an empiricist starting-point. Human beings are receptive creatures. (...) We must be affected by the things of which we come to have knowledge. Kant believes that humility follows from this fact of receptivity. Humility does follow from receptivity, once a further premise is supplied. Kant believes that relational properties, causal powers in particular, are not reducible to intrinsic properties, and that intrinsic properties are therefore causally inert. Receptivity implies that we can have knowledge only of what can affect us. Irreducibility implies, in Kant's view, that intrinsic properties cannot affect us. Humility follows from these. This interpretation finds support in a range of critical and pre-critical writings, but there is a special focus on an early anti-Leibnizian argument for irreducibility that has considerable philosophical merit. One advantage of this interpretation is that the following famous contradiction is dissolved: things in themselves exist, and are the causes of phenomena, and we have no knowledge of them as they are in themselves. Moreover Kant's scientific realism, surprising on an idealist interpretation, makes sense. It does not conflict with Kant's claim that he makes all the qualities secondary--he means that he makes them powers, or in Locke's terms, tertiary qualities. Kant's "primary"/secondary quality distinction is superior to widely accepted alternatives, and his application of the irreducibility argument to the primary qualities challenges some current orthodoxies. Kant's commitment to the unobservables of science is permitted by his understanding of receptivity: we can have knowledge of anything that can affect us. Kant's scientific realism, and his humility, thus have a common source. (shrink)

Elaborating on the substantial parallels between Molina’s and Kant’s attempts to reconcile human freedom with divine foreknowledge and natural causal determinism respectively, my aim is to establish a proper historical connection as well. Leibniz is shown to be the crucial mediator in two respects: (i) Kant knew Molina’s account of divine knowledge in general in its Leibnizian version through Baumgarten’s Metaphysica. In this work, scientia media plays no role in the explication as to how God knows absolute future contingents. (ii) (...) In the Critique of Practical Reason Kant resorted to doctrines similar to Molina’s in his criticism of Leibniz’s alternative explication which drew on complete concepts of monads. (shrink)

I examine two recent accounts of Kant's version of compatibilism, i.e., Hudson's reconstruction of Kant as an "anomalous monist" avant la lettre, and Wood's interpretation along the lines of a modified version of Boethius's "eternity solution". To retain the advantages of both strategies, yet avoid their respective shortcomings, I suggest approaching Kant's doctrine from his theology lectures and their concept of universal providence. This (probably Molinist) notion, an integral element of the regulative use of reason, allows Kant to regard, in (...) part, the actual laws of nature as a function of the individual characters of human beings. (shrink)