Greek thinkers: a history of ancient philosophy

vol. I. book I. The beginnings. book II. From metaphysics to positive science. book III. The age of enlightenment. 1901.

vol. II. book IV. Socrates and the Socratics. book V. Plato. 1905.

vol. III. book V (continued) Plato.1905.

vol. IV. book VI. Aristotle and his successors. 1912.