Ètica nicomaquea

The _Ethics_ of Aristotle is one half of a single treatise of which his _Politics_ is the other half. Both deal with one and the same subject. This subject is what 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 subject, not merely to the first part; the last chapter of the _Ethics_ points forward to the _Politics_, and sketches for that part of the treatise the order of enquiry to be pursued (an order which in the actual treatise is not adhered to). The principle of distribution of the subject-matter between the two works is far from obvious, and has been much debated. Not much can be gathered from their titles, which in any case were not given to them by their author. Nor do these titles suggest any very compact unity in the works to which they are applied: the plural forms, which survive so oddly in English (Ethic_s_, Politic_s_), were intended to indicate the treatment within a single work of a _group_ of connected questions. The unity of the first group arises from their centring round the topic of character, that of the second from their connection with the existence and life of the city or state. We have thus to regard the _Ethics_ as dealing with one group of problems and the _Politics_ with a second, both falling within the wide compass of Political Science.…