...Aristotle calls in one place the "philosophy of
human affairs;" but more frequently Political or Social Science. In the
two works taken together we have their author's whole theory of human
conduct or practical activity, that is, of all human activity which
is not directed merely to knowledge or truth. The two parts of this
treatise are mutually complementary, but in a literary sense each
is independent and self-contained. The proem to the Ethics is an
introduction to the whole...