After these arose also other natural philosophers, whose opinions we have not deemed it necessary to declare, (inasmuch as) they present no diversity to those already specified. Since, however, upon the whole, a not inconsiderable school has sprung (from thence), and many natural philosophers subsequently have arisen from them, each advancing different accounts of the nature of the universe, it seems also to us advisable, that, explaining the philosophy that has come down by succession from Pythagoras, we should recur to the opinions entertained by those living after the time of Thales, and that, furnishing a narrative of these, we should approach the consideration of the ethical and logical philosophy which Socrates and Aristotle originated, the former ethical, and the latter logical.51 Or, “and among these, Socrates a moral philosopher, and Aristotle a logician, originated systems.”
[5] Μετὰ τούτους ἐγένοντο καὶ ἕτεροι φυσικοί, ὧν οὐκ ἀναγκαῖον ἡγησάμεθα τὰς δόξας εἰπεῖν, μηδὲν τῶν προειρημένων ἀπεμφαινούσας. ἀλλ' ἐπεὶ καθόλου οὐ μικρὰ γεγένηται ἡ σχολὴ πολλοί τε οἱ μετέπειτα φυσικοὶ ἐξ αὐτῆς γεγένηνται, ἄλλοι ἄλλως περὶ φύσεως τοῦ παντὸς διηγούμενοι, [καὶ] δοκεῖ ἡμῖν τὴν ἀπὸ Πυθαγόρου ἐκθεμένους φιλοσοφίαν κατὰ διαδοχὴν ἀναδραμεῖν ἐπὶ τὰ δόξαντα τοῖς μετὰ Θαλῆν, καὶ ταῦτα ἐξειπόντας ἐλθεῖν ἐπί τε τὴν ἠθικὴν καὶ [τὴν] λογικὴν φιλοσοφίαν, ὧν ἦρξαν Σωκράτης μὲν ἠθικῆς, Ἀριστοτέλης δὲ διαλεκτικῆς.