Plato, Laws 653b

τούτοις πάντα κεκτημένος ἀγαθά. παιδείαν δὴ λέγω τὴν παραγιγνομένην πρῶτον παισὶν ἀρετήν· ἡδονὴ δὴ καὶ φιλία καὶ λύπη καὶ μῖσος ἂν ὀρθῶς ἐν ψυχαῖς ἐγγίγνωνται μήπω δυναμένων λόγῳ λαμβάνειν, λαβόντων δὲ τὸν λόγον, συμφωνήσωσι τῷ λόγῳ ὀρθῶς εἰθίσθαι ὑπὸ τῶν προσηκόντων ἐθῶν, αὕτη ʼσθʼ ἡ συμφωνία σύμπασα μὲν ἀρετή, τὸ δὲ περὶ τὰς ἡδονὰς καὶ λύπας τεθραμμένον αὐτῆς ὀρθῶς ὥστε

is indeed a perfect man. I term, then, the goodness that first comes to children education. When pleasure and love, and pain and hatred, spring up rightly in the souls of those who are unable as yet to grasp a rational account; and when, after grasping the rational account, they consent thereunto that they have been rightly trained in fitting practices:—this consent, viewed as a whole, is goodness, while the part of it that is rightly trained in respect of pleasures and pains, so as to hate what ought to be hated, right from the beginning