φαμὲν δὲ πῦρ καὶ ἀ& 153·ρα καὶ ὕδωρ γίγνεσθαι ἐξ ἀλλήλων καὶ ἕκαστον ἐν ἑκάστῳ ὑπάρχειν τούτων δυνάμει: 1