Philip L. Quinn is John A. O'Brien Professor of Philosophy at the University of Notre Dame, Indiana, and was previously William Herbert Perry Faunce Professor of Philosophy at Brown University, Rhode Island. He is author of "Divine Commands and Moral Requirements" (1978), and of numerous articles in philosophy of religion, philosophy of science, theoretical physics, religious ethics, metaphysics, epistemology, value theory, political philosophy, and philosophy and literature. He has served as editor of the journal "Faith and Philosophy" (1990-5); as President of the Central Division of the Ame...