Note 1 — Chapter V · LOGIC OF THE STOICS.

Natural Science was divided by the Stoics themselves (Diog. 132): (1) εἰδικῶς into τόποι περὶ σωμάτων καὶ περὶ ἀρχῶν καὶ στοιχείων καὶ θεῶν καὶ περάτων καὶ τόπου καὶ κενοῦ· (2) γενικῶς into three divisions, περὶ κόσμον, περὶ στοιχείων, and the αἰτιολογικός. The first of these divisions covers ground which is partly peculiar to natural science and is partly shared by the mathematician (astronomy. Posidonius in Simpl. Phys. 64, b, discusses at length the difference between astronomy and natural science); and the third, ground which is shared by both the physician and the mathematician. The precise allotment of the subject into these divisions is not known. At best, it would be a very uncomfortable division. ↑