In The Nichomachean Ethics, Aristotle's philosophical enquiry into virtue, character, and the good life, his challenge is to manage our emotional life with intelligence. Our passions, when well exercised, have wisdom; they guide our thinking, our values, our survival. But they can easily go awry, and do so all too often. As Aristotle saw, the problem is not with emotionality, but with the appropriateness of emotion and its expression.