Plato, Republic, book 5 49:

οἱο͂́ν τ’ οὖν, ἔφην ἐγώ, ἐπὶ τὰ αὐτὰ χρῆσθαί τινι ζῴῳ, ἂν μὴ τὴν αὐτὴν τροφήν τε καὶ παιδείαν ἀποδιδῷσ;