Previous edition, 1st, published in 1971.

J. L. Mackie argued that if there were objective moral properties or facts, then the supervenience relation linking the nonmoral to the moral would be metaphysically queer. Moral realists reply that objective supervenience relations are ubiquitous according to contemporary versions of metaphysical naturalism and, hence, that there is nothing especially queer about moral supervenience. In this paper we revive Mackie's challenge to moral realism. We argue: (i) that objective supervenience relations of any kind, moral or otherwise, should be explainable rather (...) than sui generis; (ii) that this explanatory burden can be successfully met vis-à-vis the supervenience of the mental upon the physical, and in other related cases; and (iii) that the burden cannot be met for (putative) objective moral supervenience relations. (shrink)

Each volume of this series of companions to major philosophers contains specially commissioned essays by an international team of scholars and will serve as a reference work for students and nonspecialists. John Rawls is the most significant and influential philosopher and moral philosopher of the twentieth century. His work has profoundly shaped contemporary discussions of social, political and economic justice in philosophy, law, political science, economics and other social disciplines. In this exciting collection of new essays, many of the world's (...) leading political and moral theorists discuss the full range of Rawls's contribution to the concepts of political and economic justice, democracy, liberalism, constitutionalism, and international justice. There are also assessments of Rawls's controversial relationships with feminism, utilitarianism and communitarianism. New readers will find this the most accessible guide to Rawls currently available. Advanced students and specialists will find a conspectus of recent developments in the interpretation of Rawls. (shrink)

There is a long tradition in philosophy of using a priori methods to draw conclusions about what is possible and what is necessary, and often in turn to draw conclusions about matters of substantive metaphysics. Arguments like this typically have three steps: first an epistemic claim , from there to a modal claim , and from there to a metaphysical claim.

It is argued that there are three main forms of necessity --the metaphysical, the natural and the normative--and that none of them is reducible to the others or to any other form of necessity. In arguing for a distinctive form of natural necessity, it is necessary to refute a version of the doctrine of scientific essentialism; and in arguing for a distinctive form of normative necessity, it is necessary to refute certain traditional and contemporary versions of ethical naturalism.