§4.12.1Δύο ταύτας ἑτοιμότητας ἔχειν ἀεὶ δεῖ· τὴν μὲν πρὸς τὸ πρᾶξαι μόνον ὅπερ ἂν ὁ τῆς βασιλικῆς καὶ νομοθετικῆς λόγος ὑποβάλλῃ ἐπʼ ὠφελείᾳ ἀνθρώπων· τὴν δὲ πρὸς τὸ μεταθέσθαι, ἐὰν ἄρα τις παρῇ διορθῶν καὶ μετάγων ἀπό τινος οἰήσεως.
One must always have these two forms of readiness: one, to do only what the reason of the royal and legislative art suggests for the benefit of human beings; the other, to change one's mind if indeed someone is present who corrects and leads one away from some opinion.
τὴν μέντοι μεταγωγὴν ἀεὶ ἀπό τινος πιθανότητος, ὡς δικαίου ἢ κοινωφελοῦς, γίνεσθαι καὶ τὰ προηγμένα τοιαῦτα μόνον εἶναι δεῖ, οὐχ ὅτι ἡδὺ ἢ ἔνδοξον ἐφάνη.
However, this change of mind must always proceed from some convincing ground, such as what is just or of common utility, and the actions thus prompted must be only of this kind, and not because it appeared pleasant or glorious.