We often speak of a person's character--good or bad, strong or weak--and think of it as a guide to how that person will behave in a given situation. What is character? How does it relate to one's sense of self, or to the process of moral decision? Are we responsible for our characters? Character answers these questions, and goes on to examine the place of character in ethical philosophy. Along the way he touches on such subjects as personal identity, the nature of happiness, moral education, and what makes possible a valuable life.