# Adversus mathematicos 427

Sextus Empiricus, Adversus mathematicos, <ΠΡΟΣ ΛΟΓΙΚΟΥΣ>. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/sextus-empiricus/adversus-mathematicos/427

ὥσπερ τε ἐπεὶ τῶν φανταστῶν τὰ μὲν φαίνεται καὶ ὑπάρχει, τὰ δὲ φαίνεται μέν, οὐχὶ δέ γε καὶ ὑπάρχει, χρῄζομέν τινος κριτηρίου τοῦ παραστήσοντος τίνα ἐστὶ τὰ φαινόμενα ἅμα καὶ ὑπάρχοντα καὶ τίνα τὰ φαινόμενα καὶ μὴ ὑπάρχοντα, οὕτως ἐπεὶ καὶ τῶν φαντασιῶν αἱ μέν εἰσι καταληπτικαὶ αἱ δὲ οὔ, δεόμεθα κριτηρίου τοῦ διατάξοντος τίνες εἰσὶ τοιαῦται καὶ τίνες ἀκατάληπτοί τε καὶ ψευδεῖς.

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Sextus Empiricus, Adversus mathematicos, ed. Hermann Mutschmann, Jürgen Mau. 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/tlg0544.tlg002.local001/.