This collection of essays shows how traditional problems of philosophy can be understood more clearly when considered in terms of law, economics and political science. There are four sections in the book.;The first offers a version of legal positivism and an original theory of legal rights. The second section critically evaluates the economic approach to law, and the third considers the relationship of justice to liability for unintentional harms and to the practice of settling disputes rather than fully litigating them. Finally, Coleman explores formal social choice in democratic theory, the relationship between market behaviour and voting and the view that morality itself, like law, is a solution of the problem of market failure.