Plato, Laws 798e

ἢ πῶς; οὐδαμῶς ἄλλως πως τό γε παρʼ ἡμῖν δόγμα ἔχον ἂν εἴη. οὐκοῦν, φαμέν, ἅπασαν μηχανητέον μηχανὴν ὅπως ἂν ἡμῖν οἱ παῖδες μήτε ἐπιθυμῶσιν ἄλλων μιμημάτων ἅπτεσθαι κατὰ ὀρχήσεις ἢ κατὰ μελῳδίας, μήτε τις αὐτοὺς πείσῃ προσάγων παντοίας ἡδονάς; ὀρθότατα λέγεις.

or bad men? Or how do we stand? Our view at least remains unaltered. We assert, then, that every means must be employed, not only to prevent our children from desiring to copy different models in dancing or singing, but also to prevent anyone from tempting them by the inducement of pleasures of all sorts. Quite right.