Plato, Laws 696a

διαφερόντως πλουσίων καὶ τυράννων παῖδες τὰ πολλὰ ζῶσιν· οὐ γὰρ μή ποτε γένηται παῖς καὶ ἀνὴρ καὶ γέρων ἐκ ταύτης τῆς τροφῆς διαφέρων πρὸς ἀρετήν. ἃ δή, φαμέν, τῷ νομοθέτῃ σκεπτέον, καὶ ἡμῖν δὲ ἐν τῷ νῦν παρόντι. δίκαιον μήν, ὦ Λακεδαιμόνιοι, τοῦτό γε τῇ πόλει ὑμῶν ἀποδιδόναι, ὅτι πενίᾳ καὶ πλούτῳ καὶ ἰδιωτείᾳ καὶ βασιλείᾳ διαφέρουσαν οὐδʼ ἡντινοῦν τιμὴν καὶ τροφὴν νέμετε, ἃς μὴ τὸ κατʼ ἀρχὰς

but in the evil life which is usually lived by the sons of excessively rich monarchs; for such an upbringing can never produce either boy or man or greybeard of surpassing goodness. To this, we say, the lawgiver must give heed,—as must we ourselves on the present occasion. It is proper, however, my Lacedaemonian friends, to give your State credit for this at least,—that you assign no different honor or training whatsoever to poverty or wealth, to the commoner or the king,