Few would disagree that depth is an admirable, highly desirable, and yet rare quality. One would expect to find, therefore, that much has been written on the subject. But this is not so. Perhaps the topic appears forbidding, because the nature of depth is itself a deep and difficult question, since it forces those who ask it to decide what is ultimately worth caring about. Be that as it may, I shall venture on to this rarely explored ground. My strategy (...) is to begin with some introductory remarks about depth in general and about moral depth as a particular form of it; then discuss Sophocles' dramatic treatment of the development of Oedipus toward, as I shall interpret it, greater depth; and then go on to formulate a more discursive account based on Sophocles' poetic intimations. (shrink)