Plato, Republic, book 7 311:

(플라톤, Republic, book 7 311:)

γὰρ οὐδὲν ἔχειν τῶν τοιούτων ‐ οὔτε ἄνω ἀλλὰ κάτω αὐτοῦ βλέπειν τὴν ψυχήν, κἂν ἐξ ὑπτίασ νέων ἐν γῇ ἢ ἐν θαλάττῃ μανθάνῃ.