# in Aristotelis Meteorologicorum librum primum commentarium 90

Joannes Philoponus, in Aristotelis Meteorologicorum librum primum commentarium, IOANNIS PHILOPONI IN METEOROLOGICORUM. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/joannes-philoponus-phil/in-aristotelis-meteorologicorum-librum-primum-commentarium/90

Εἰ δὲ κινοῖτο τὸ ἔνοπτρον καὶ τὸ ὁρώμενον ἐω τῲ αὐτῷ μένοι ἀποστήματι πρὸς τὸ ὁρῶν καὶ ἠρεμοῦν, | πρὸς ἄλληλα δὲ μὴ ἰσοταχῶς μηδ’ ἐν τῷ αὐτῷ ἀεὶ διαστήματι, ἀδύνατον τὴν αὐτὴν εμφασιν ἐπὶ τοῦ αὐτοῦ εἶναι μέρους ἐνόπτρου. Κινεῖ μὲν τὸ ἔνοπτρον, οἷον τοὺς ἀπλανεῖς, καὶ τὸ ὁρώμενον, λέγω τὸν ἥλιον, οὐκ ἰσοταχῶς οὐδ’ ἐν τῷ αὐτῷ ἀεὶ διαστήματι· πρὸς δὲ τὸ ὁρῶν, τουτέστιν ἡμᾶς, τὴν αὐτὴν ἀπόστασιν ἔχον τίθησι τούτων ἑκάτερον, τούς τε ἀπλανεῖς καὶ τὸν ἥλιον, οὐκ ἰσοταχῶς δὲ κινεῖσθαί φησιν αὐτοὺς τὴν κίνησιν, ἣν ἕκαστος καθ’ αὑτὸν κινεῖται. ταχύτερος γὰρ τῶν ἄλλων ὁ ἥλιος τὴν ἰδίαν· ἀνάγκη οὗν διὰ τὴν ἰδίαν κίνησιν ὑπολείπεσθαι τὸν ἥλιον τῶν ἀπλανῶν καὶ ἄλλοτε ἄλλοις ἐν τόποις εἶναι παρ’ ἐκείνους· διόπερ οὔτε τὴν αὐτὴν ἀπόστασιν ἑκάστῳ τούτων ἀεὶ ἔχει οὔτ’ ἐν ἑνὶ καὶ τῷ αὐτῷ μένει τόπῳ. οὐκοῦν ἀλλήλων μὲν οὐκ ἴσην διεστήκασιν ὁ ἥλιος καὶ οἱ ἀπλανεῖς, τῶν δὲ ὁρώντων ἡμῶν διὰ τὸ εἶναι ἡμᾶς ἐν τῷ τοῦ παντὸς κέντρῳ τῇ γῇ τὸ ἴσον ἀπέχουσιν ἀμφότεροι διάστημα. τοῦτο δ’ αὐτὸ δεικνὺς ἐπήγαγεν·

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John Philoponus, in Aristotelis Meteorologicorum librum primum commentarium, ed. Michael Hayduck. 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/tlg4015.tlg005.local001/.