Abstract
1. To begin with, if metaphysics is a science at all, it must be so in a sense quite different from that in which we understand the remaining sciences, empirical and mathematical, to be what they are. The metaphysician is indeed a man rich in observations, a man who wears a knowing smile about the world's sad intricacies. Yet he seeks not so much to show facts or even to demonstrate to us that their causes are necessarily such and such, as he seeks to illuminate the facts at a further remove by disentangling the many senses in which facts and their causes--and the relations between them--can be said to exist in the first place. To the very limits of human reason and inquiry, metaphysics is an account, patterned roughly with the sciences, of the conditions of being and the kinds of beings.