Note 25 — Chapter VIII · ANALYTICA POSTERIORA II.
Reading edition
Ibid. p. 94, a. 9: ὁ δὲ τῶν ἀμέσων ὁρισμός, θέσις ἐστὶ τοῦ τί ἐστιν ἀναπόδεικτος. Compare I. xxiv. p. 85, b. 24: ᾧ γὰρ καθ’ αὑτὸ ὑπάρχει τι, τοῦτο αὐτὸ αὑτῷ αἴτιον. See Kampe, Die Erkenntniss-theorie des Aristoteles, p. 212, seq.