# Περὶ Πυρετῶν [Sp.] 2.2

Alexander of Aphrodisias, Περὶ Πυρετῶν [Sp.], Chapter 2. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/alexander-of-aphrodisias/sp/2.2

Δεῖ γὰρ παρὰ φύσιν εἶναι τὴν ταῖς φυσικαῖς ἐνεργείαις ἀντιπράττουσαν θέρμην, καὶ ἀπὸ καρδίας ἄρχεσθαι, ὅθεν δήπου τὸ φυσικὸν ἀναβλύζει θερμόν, καὶ δι᾽ αὐτῶν ἐκείνων ἐφ’ ἅπαν προϊέναι τὸ σῶμα, δι᾽ ὧν ἐκεῖνο πρόεισι, τὰς φυσικὰς ἐνεργείας ἀποτελοῦν· εἰ γὰρ μὴ δι᾽ ἐκείνων, αἷς τὸ φυσικὸν προϊὸν ἐνεργεῖ, πόθεν ἂν ἕξῃ τὰς διόδους ὥστ᾽ ἐφ᾽ ἅπαν ἐξαπλωθῆναι τὸ σῶμα; καλῶς οὖν ἀπεφήναντο οἱ οὕτω τὸν πυρετὸν ὁρισάμενοι. Ἵνα δ᾽ ὁ λόγος ἡμῖν καὶ σαφέστερος ᾖ, δίκαιον ἂν εἴη καὶ τὸν ὅρον αὐτόν, ὡς ἔχοι, κατὰ μέρος ἐπιστῆσαι, καὶ εἴ τι ἐπιλύσασθαί οἱ ἀπορίας ἐχόμενον ἔνεστι.

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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/.