one on Interpretation; a book containing an account of the Constitutions of a hundred and fifty-eight cities, and also some individual democratic, oligarchic, aristocratic, and tyrannical Constitutions; Letters to Philip; Letters of the Selymbrians; four Letters to Alexander; nine to Antipater; one to Mentor; one to Ariston; one to Olympias; one to Hephæstion; one to Themistagoras; one to Philoxenus; one to Democritus; one book of Poems beginning:—
A book of Elegies which begins:—
The whole consisting of four hundred and forty-five thousand two hundred and seventy lines.
XIII. These then are the books which were written by him. And in them he expresses the following opinions:—that there is in philosophy a two-fold division; one practical, and the other theoretical. Again, the practical is divided into ethical and political, under which last head are comprised considerations affecting not only the state, but also the management, of a single house. The theoretical part, too, is subdivided into physics and logic; the latter forming not a single division, turning on one special point, but being rather an instrument for every art brought to a high degree of accuracy. And he has laid down two separate objects as what it is conversant about, the persuasive and the true. And he has used two means with reference to each end; dialectics and rhetoric, with reference