 Even at his most theoretical, Xenophon’s Socrates shows a practical bent. Saying that those who know what each virtue is can expound these to others, he gives definitions for the virtues. A pious man, for instance, knows the laws respecting the worship of the gods and thus worships the gods lawfully; and, in general, the man who knows what is lawful with respect to the gods (ta peri tous theous nomima eidôs) is pious (IV.vi.1–4). The pious man, then, is defined by informed religious practice. The most abstract definition would seem to be that of wisdom. Claiming the wise are wise by knowledge (epistêmê(i)), Socrates says wisdom is knowledge. Next, however, he cautions that no one can know all things; so a person is wise to the extent that he knows (IV.vi.7). Knowledge, then, can be accumulated. Since knowledge is divided into various skills, such as managing an estate and generalship, and their subdivisions, the wise man would appear to be someone who acquires as much of this kind of knowledge as possible. If so, he is a person of wide accomplishments, not someone with a theory about the universe.