Plato, Laws 890a

μετάθωνται καὶ ὅταν, τότε κύρια ἕκαστα εἶναι, γιγνόμενα τέχνῃ καὶ τοῖς νόμοις ἀλλʼ οὐ δή τινι φύσει. ταῦτʼ ἐστίν, ὦ φίλοι, ἅπαντα ἀνδρῶν σοφῶν παρὰ νέοις ἀνθρώποις, ἰδιωτῶν τε καὶ ποιητῶν, φασκόντων εἶναι τὸ δικαιότατον ὅτι τις ἂν νικᾷ βιαζόμενος· ὅθεν ἀσέβειαί τε ἀνθρώποις ἐμπίπτουσιν νέοις, ὡς οὐκ ὄντων θεῶν οἵους ὁ νόμος προστάττει διανοεῖσθαι δεῖν, στάσεις τε διὰ ταῦτα ἑλκόντων πρὸς τὸν κατὰ φύσιν ὀρθὸν βίον, ὅς ἐστιν τῇ ἀληθείᾳ κρατοῦντα ζῆν τῶν ἄλλων καὶ μὴ δουλεύοντα ἑτέροισι κατὰ νόμον.

is at that time authoritative, though it owes its existence to art and the laws, and not in any way to nature. All these, my friends, are views which young people imbibe from men of science, both prose-writers and poets, who maintain that the height of justice is to succeed by force; whence it comes that the young people are afflicted with a plague of impiety, as though the gods were not such as the law commands us to conceive them; and, because of this, factions also arise, when these teachers attract them towards the life that is right according to nature, which consists in being master over the rest in reality, instead of being a slave to others according to legal convention.