Philip Pettit

The rationality of individual agents is secured for the most part by their make-up or design. Some agents, however – in particular, human beings – rely on the intentional exercise of thinking or reasoning in order to promote their rationality further; this is the activity that is classically exemplified in Rodin’s sculpture of Le Penseur. Do group agents have to rely on reasoning in order to maintain a rational profile? Recent results in the theory of judgment aggregation show that under a range of plausible conditions they do. In a slogan: group agents are made, not born.

This new edition of A Companion to Contemporary Political Philosophy has been extended significantly to include 55 chapters across two volumes written by some of today's most distinguished scholars. New contributors include some of today’s most distinguished scholars, among them Thomas Pogge, Charles Beitz, and Michael Doyle Provides in-depth coverage of contemporary philosophical debate in all major related disciplines, such as economics, history, law, political science, international relations and sociology Presents analysis of key political ideologies, including new chapters on Cosmopolitanism and Fundamentalism Includes detailed discussions of major concepts in political philosophy, including virtue, power, human rights, and just war