Note 30 — Chapter XI · PHYSICA AND METAPHYSICA.
Reading edition
Aristot. Met. A. vi. p. 987, a. 34; Γ. v. p. 1010, a. 12: Κράτυλος — ὃς τὸ τελευταῖον οὐθὲν ᾤετο δεῖν λέγειν ἀλλὰ τὸν δάκτυλον ἐκίνει μόνον, καὶ Ἡρακλείτῳ ἐπετίμα εἰπόντι ὅτι δὶς τῷ αὐτῷ ποτάμῳ οὐκ ἔστιν ἐμβῆναι· αὐτὸς γὰρ ᾤετο οὔδ’ ἁπάξ. Herakleitus adopted as his one fundamentum Fire or Heat, as being the principle of mobility or change: χρῶνται γὰρ ὡς κινητικὴν ἔχοντι τῷ πυρὶ τὴν φύσιν — Metaph. A. iii. p. 984, b. 5. Ibid. K. v. p. 1062, a. 31-b. 10; K. x. p. 1067, a. 5; M. iv. p. 1078, b. 15.