Plato, Epinomis 988b

που τὴν ἀνθρωπίνην φύσιν, ἀλλʼ οἶδεν ὅτι διδάσκοντος αὐτοῦ συνακολουθήσει καὶ μαθήσεται τὰ διδασκόμενα. ὅτι δὲ διδάσκει τοῦτο αὐτὸ ἡμᾶς, μανθάνομεν δὲ ἡμεῖς ἀριθμόν τε καὶ ἀριθμεῖν, οἶδεν δήπου. πάντων γὰρ ἀφρονέστατον ἂν εἴη τοῦτο ἀγνοοῦν· τὸ λεγόμενον γὰρ ἂν ὄντως αὐτὸ αὑτὸ ἀγνοοῖ, χαλεπαῖνον τῷ δυναμένῳ μανθάνειν, ἀλλʼ οὐ συγχαῖρον ἄνευ φθόνου διὰ θεὸν ἀγαθῷ γενομένῳ. λόγον δὴ καὶ πολὺν καὶ

human nature, but knows that if it teaches us we shall follow its guidance and learn what is taught us. That it so teaches us, and that we learn number and numeration, it knows of course: for it would be most utterly unintelligent if it were ignorant of this; since it would truly, as the saying is, be ignorant of itself, vexed with that which was able to learn, instead of whole-heartedly rejoicing with one who became good by God’s help. And indeed there is much good reason to suppose that formerly,