Plato, Epinomis 979b

παρὰ ταῦτα γίγνεται πρὸς τὸ φλαῦρον, οὐ τὴν θείαν ἀλλὰ τὴν ἀνθρωπίνην αἰτιᾶσθαι χρὴ φύσιν, οὐκ ἐν δίκῃ διανέμουσαν τὸν αὑτῶν βίον. ἡμῖν δʼ οὖν ζητοῦσιν περὶ νόμων σχεδὸν ἔδοξεν τὰ μὲν ἄλλα ῥᾴδιά τʼ εἶναι γνῶναι τὰ βέλτιστα ἀνθρώποις, καὶ πᾶς ἂν ἱκανὸς γίγνεσθαι καὶ συνεῖναι τὰ λεγόμενα καὶ ποιεῖν, εἰ γνοίη τί ποτʼ ἔστιν ὃ συμφέρειν εἰκὸς καὶ τί τὸ μὴ συμφέρον· ἔδοξε δὴ καὶ νῦν ἔτι δοκεῖ τὰ

but if in spite of this something does occur in an evil way, we ought not to charge it upon the divine but upon the human nature, for not disposing our own lives aright. Now in our inquiry about laws, you know we decided that all other things that are best for men are easy to discover, and that everyone may become competent both to understand and to perform what he is told, if he discovers what is that which is likely to profit him, and what is not profitable: well, we decided, and we are still of the same mind, that all other studies