Brian Leiter

Serious doubts about nonreductive materialism — the orthodoxy of the past two decades in philosophy of mind — have been long overdue. Jaegwon Kim has done perhaps the most to articulate the metaphysical problems that the new breed of materialists must confront in reconciling their physicalism with their commitment to the autonomy of the mental. Although the difficulties confronting supervenience, multiple-realizability, and mental causation have been recurring themes in his work, only mental causation — in particular, the specter of epiphenomenalism — has really captured the interest of philosophers in general in recent years.This growing attention has spawned a large body of literature, which it is not our aim here to explore or assess. Rather, we want to call attention to what we believe is a new and quite different argumentative strategy against epiphenomenalism voiced in some recent articles by Tyler Burge and Stephen Yablo. Each has challenged two central assumptions of the existing mental causation debate.

Both an introduction to Nietzsche’s moral philosophy, and a sustained commentary on his most famous work, On the Genealogy of Morality, this book has become the most widely used and debated secondary source on these topics over the past dozen years. Many of Nietzsche’s most famous ideas - the "slave revolt" in morals, the attack on free will, perspectivism, "will to power" and the "ascetic ideal" - are clearly analyzed and explained. The first edition established the centrality of naturalism to Nietzsche’s philosophy, generating a substantial scholarly literature to which Leiter responds in an important new Postscript. In addition, Leiter has revised and refreshed the book throughout, taking into account new scholarly literature, and revising or clarifying his treatment of such topics as the objectivity of value, epiphenomenalism and consciousness, and the possibility of "autonomous" agency

Marx did not have a normative theory, that is, a theory that purported to justify, discursively and systematically, his normative opinions, to show them to be rationally obligatory or objectively valid. In this regard, Marx was obviously not alone: almost everyone, including those who lead what are widely regarded as exemplary ‘moral’ lives, decide and act on the basis of normative intuitions and inclinations that fall far short of a theory. Yet self-proclaimed Marxists like G. A. Cohen and Jurgen Habermas have reintroduced a kind of normative theory into the Marxian tradition that Marx himself would have ridiculed. This essay defends Marx’s position and tries to explain the collapse of Western Marxism into bourgeois practical philosophy, i.e., philosophizing about what ought to be done that is unthreatening to capitalist relations of production.

The “naturalistic turn” that has swept so many areas of philosophy over the past three decades has also had an impact in the last decade in legal philosophy. Methodological naturalists (M-naturalists) view philosophy as continuous with empirical inquiry in the sciences. Some M-naturalists want to replace conceptual and justificatory theories with empirical and descriptive theories; they take their inspiration from more-or-less Quinean arguments against conceptual analysis and foundationalist programs. Other M-naturalists retain the normative and regulative ambitions of traditional philosophy, but emphasize that it is an empirical question what normative advice is actually useable and effective for creatures like us. Some M-naturalists are also..

Do moral properties figure in the best explanatory account of the world? According to a popular realist argument, if they do, then they earn their ontological rights, for only properties that figure in the best explanation of experience are real properties. Although this realist strategy has been widely influential—not just in metaethics, but also in philosophy of mind and philosophy of science—no one has actually made the case that moral realism requires: namely, that moral facts really will figure in the best explanatory picture of the world. This issue may have been neglected in part because the influential dialectic on moral explanations between philosophers Gilbert Harman and Nicholas Sturgeon has focused debate on whether moral facts figure in relevant explanations. Yet as others have noted, explanatory relevance is irrelevant when it comes to realism: after all, according to the popular realist argument, it is inference to the best explanation of experience that is supposed to confer ontological rights. I propose to ask, then, the relevant question about moral explanations: should we think that moral properties will figure in the best explanatory account of the world?

This is an invited commentary on Richard Rorty's Dewey Lecture, given last year at the University of Chicago Law School. “Pragmatism,” says Rorty, “puts natural science on all fours with politics and art. It is one more source of suggestions about what to do with our lives.” I argue that the truth in pragmatism - that the epistemic norms that help us cope are the ones on which we rely - is obscured by Rorty's promiscuous version of the doctrine, which confuses the criteria for relying on particular epistemic norms (namely, that they work for human purposes) with the content of the norms themselves (most of which make no reference to human purposes, but rather criteria like causal or explanatory power). We need presuppose no Archmiedean standpoint to conclude, as Richard Posner does, that moral inquiry is feeble in a way physics is not; we need only take seriously our best current understanding of the world, how it works, and the epistemic norms that have proven most effective in making sense of it.