Carl Cohen is Professor of Philosophy at the University of Michigan. He has written extensively on moral and political philosophy and logic. His essays have appeared in The Nation, Commentary, Ethics, and many law reviews and other periodicals. Former chairman of the ACLU of Michigan, Cohen hasserved on Michigan's admissions committees, and as chairman of its faculty. James P. Sterba is Professor of Philosophy at the University of Notre Dame. The author of twenty-three books, most recently Three Challenges to Ethics (OUP, 2001) he is the past president of the International Society forSocial and Legal Philosophy, American Section, of Concerned Philosophers for Peace, and of the North American Society for Social Philosophy.