Yet in making our choices we must sometimes start with a vision, however inchoate, of what it is for a human life to go well. That was one of Aristotle's central insights. It is my argument that we should be free to avail ourselves of the resources of many disciplines to define that vision; and that in bringing them together we are being faithful to a long tradition. In the humanities, I think, we are always engaged in illuminating the present by drawing on the past; it is the only way to make a future worth hoping for.