Plato, Epinomis 976c

μάλα δὲ πολλὰ καὶ ἀσφαλῶς μνημονεύοντα, ὅταν τε τὸ πρόσφορον ἑκάστῳ διαμνημονεύῃ τις, ὅτι γιγνόμενον ἂν πρέποι, τοῦτο δὲ ταχὺ δρᾷ· ταῦτα γὰρ ἅπαντα οἱ μὲν φύσιν, οἱ δὲ σοφίαν, οἱ δὲ ἀγχίνοιαν θήσουσιν φύσεως, σοφὸν δὲ ὄντως οὐδενὶ τούτων οὐδεὶς τῶν ἐμφρόνων ἐθελήσει ποτὲ καλεῖν. ἀλλὰ μὴν δεῖ φανῆναί γέ τινα ἐπιστήμην ἣν ἔχων σοφὸς γίγνοιτʼ ἂν ὁ σοφὸς ὄντως ὢν καὶ μὴ μόνον δοξαζόμενος. ἴδωμεν δή. χαλεπῷ μὲν γὰρ λόγῳ παντάπασιν

securely; or when one recalls what is suitable to each person, what should properly be done, and does it quickly. Some people will describe all this as nature, others as wisdom, and others as a natural readiness of mind: but no sensible person will ever call a man really wise for any of these gifts. But surely there must be found some science, the possession of which will cause the wisdom of him who is really wise and not wise merely in men’s opinion. Well, let us see: for in this laborious discussion we are trying our hardest to find some other science,