# In Aristotelis analyticorum priorum librum I commentarium 5

Alexander of Aphrodisias, In Aristotelis analyticorum priorum librum I commentarium, Page 27a5. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/alexander-of-aphrodisias/in-aristotelis-analyticorum-priorum-librum-i-commentarium/5

Κατηγ·ορείσθω γὰρ τὸ M τοῦ μὲν N μηδενὸς τοῦ δὲ Ξ παντός. ἐπεὶ οὖν ἀντιστρέφει τὸ στερητικόν. Δέδεικται ἐν τοῖς ἐπάνω, ὅτι ἡ καθόλου στερητικὴ ὑπάρχουσα ἑαυτῇ ἀντιστρέφει. ἐπεὶ οὖν εἴληπται ἡ μείζων πρότασις καθόλου ἀποφατική (κεῖται γὰρ τὸ Μ τῷ Ν μηδενί), ἄν ἀντιστραφῇ, ἔσται καὶ τὸ Ν οὐδενὶ τῷ Μ· κεῖται δὲ καὶ τὸ Μ παντὶ τῷ Ξ· οὕτως δὲ ἐχουσῶν τῶν γίνεται ὁ δεύτερος συλλογισμὸς τῶν ἐν τῷ πρώτῳ σχήματι συνάγων καθόλου ἀποφατικὸν τὸ τὸ Ν μηδενὶ τῷ Ξ. τοῦτο δὴ συναχθήσεται ὑπὸ τῆς ἐκκειμένης συζυγίας. ἔστω τὸ μὲν Μ ζῷον τὸ δὲ | Ν ἄψυχον τὸ δὲ Ξ ἄνθρωπος. εἰ δὴ τὸ ζῷον κατ’ οὐδενὸς ἀψύχου, καὶ τὸ ἄψυχον κατ’ οὐδενὸς ζῴου· τὸ δὲ ζῷον κατὰ παντὸς ἀνθρώπου· τὸ ἄψυχον ἄρα κατ’ οὐδενὸς ἀνθρώπου. καὶ οὗτος μὲν ὁ πρῶτος τοῦ δευτέρου σχήματος συλλογισμὸς καὶ διὰ τοιαύτης βοηθείας τελειούμενος.

---

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/.