Can philosophy enable us to lead better lives through a systematic understanding of our human nature? John Cottingham's thought-provoking study examines three major philosophical approaches to this problem. Starting with the attempts of Classical philosophers to cope with the recalcitrant forces of the passions, he moves on to examine the moral psychology of Descartes, and concludes by analyzing the insights of modern psychoanalytic theory into the human predicament. His study provides a fresh and challenging perspective on moral philosophy and psychology for students and specialists alike.