De anima libri mantissa
Alexander of Aphrodisias
Alexander of Aphrodisias. Alexandri Aphrodisiensis Praeter Commentaria Scripta Minora, Pars 1. (Supplementum Aristotelicum, Volume 2. 1). Bruns, Ivo, editor. Berlin: Reimer, 1887.
ἐν γὰρ τῷ τὰς αἰτίας εἰδέναι τῶν γιγνομένων κατὰ τέχνην ἡ τέχνη.