Paedagogus ("Instructor") is the second in the trilogy of Clement of Alexandria in which he works to develop a Christian ethic. A large part of his material is derived from the Stoic Musonius Rufus, the master of Epictetus; but for Clement the real instructor is the incarnate Logos. The first book deals with the religious basis of Christian morality, the second and third with the individual cases of conduct. As with Epictetus, true virtue shows itself with him in its external evidences by a natural, simple, and moderate way of living.