# Περὶ Πυρετῶν [Sp.] 12.4

Alexander of Aphrodisias, Περὶ Πυρετῶν [Sp.], Chapter 12. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/alexander-of-aphrodisias/sp/12.4

Ἐπεὶ δὲ πᾶσα φυσικὴ δρᾶσις ἢ πεῖσις, ἡ ἐν τῷ γίγνεσθαι τὸ εἶναι ἔχουσα κίνησις, κίνησις δὲ ἐν χρόνῳ, τοῦ δὲ χρόνου τὸ μὲν ἀρχή, τὸ δὲ μέσον, τὸ δ᾽ ἄκρον καὶ ἔσχατον, ἔτι δὲ καὶ τἀναντία, ἐν οἶς ἡ κίνησις, ἔμμεσα, πολλῶν ὄντων μεταξὺ τοῖν δυοῖν εἰδῶν τε καὶ ὑποστάσεων, ἀνάγκη μήτ᾽ ἐν τῇ ἀρχῇ τῆς κινήσεως θάτερον μὲν τῶν ἐναντίων φθαρῆναι, θάτερον δὲ ἀντεισαχθῆναι, μήτε μὴν ἐν τῷ μέσῳ· μάτην γὰρ ἄν ἦν ἡ ἀπὸ τῆς ἀρχῆς ἄχρι τοῦ μέσου καὶ τελευταίου, καὶ ἡ ἀπὸ τοῦ μέσου πάλιν ἐπὶ τὸ ἔσχατον κίνησις.

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Alexander of Aphrodisias, Περὶ Πυρετῶν [Sp.], ed. Julius Ludwig Ideler. 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.tlg003.local001/.