# In Aristotelis analyticorum priorum librum I commentarium 12-8

Alexander of Aphrodisias, In Aristotelis analyticorum priorum librum I commentarium, Page 52b12. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/alexander-of-aphrodisias/in-aristotelis-analyticorum-priorum-librum-i-commentarium/12-8

Φανερὸν οὖν, ὅτι οὐδὲ τῷ Δ τὸ Β ἀντιστρέφει. Δείξας, ὅτι τῷ Β τὸ Δ ἕπεται ἑπομένου τῷ Γ τοῦ Α, δείξας δὲ καὶ ὅτι τὰ μὲν Α Δ ἔσται ποτὲ ἅμα ἀληθῆ ὡς ἀποφατικὰ ὄντα, τὰ δὲ Β Γ ἀδύνατον, εἰ εἶεν καταφατικά, νῦν τὸ καταλειπόμενον ἐπὶ τῶν προτεθέντων δείκνυσιν, ὅτι γὰρ μηδὲ τῷ Δ τὸ Β ἀντιστρέφει, ἐπεὶ μηδὲ τὸ Α Γ ἀντέστρεφεν. οὐ γὰρ οἷόν τε τῷ Δ τὸ Β ἀκολουθεῖν. ἐπεὶ γὰρ δέδεικται, ὅτι ἐνδέχεται ἅμα ἀληθῆ ποτε εἶναι τὰ Δ Α, εἰ ἕποιτο τῷ Δ τὸ Β, ὅτε ἅμα ἀληθῆ ἐστι τὰ Δ Α, τότε ἄν ἅμα ἀληθῆ γίγνοιτο καὶ τὰ Α Β· ἐπὶ γὰρ τοῦ Δ ἄμφω ἅμα ἔσται ἀληθῆ, εἰ ἀντιστρέφοι καὶ ἕποιτο τῷ Δ τὸ Β. ὅτε γὰρ καὶ ἐφ’ οὗ ἀληθὲς τὸ Δ, τότε καὶ ἐπὶ τούτου ἀληθὲς γίνεσθαι τὸ Β· ἦν δὲ κείμενον καὶ τὸ Α ποτὲ συναληθεύειν αὐτῷ. εἶεν #x003C; ἄρα ὁμοίως ἀληθῆ τὰ Α Β· ἀδύνατον δὲ ἅμα ἀληθῆ εἶναι τὰ Α Β· τοῦτο γὰρ ἔκειτο.

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Alexander of Aphrodisias, In Aristotelis analyticorum priorum librum I commentarium, ed. Maximilian Wallies. Text: The Greek Library, from the Perseus Digital Library and other open sources, CC BY-SA 4.0. Changes: apostrophes normalised and the text divided into reading sections by Interlinea.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Source: https://thegreeklibrary.pages.lisn.upsaclay.fr/works/tlg0732.tlg005.local001/.