Plato, Laws 811b

φράζων εἴποιμʼ ἂν ἱκανόν; οἶμαι μὲν τὸ τοιόνδε σχεδόν, ὃ καὶ πᾶς ἄν μοι συγχωρήσειεν, πολλὰ μὲν ἕκαστον τούτων εἰρηκέναι καλῶς, πολλὰ δὲ καὶ τοὐναντίον· εἰ δʼ οὕτω τοῦτʼ ἔχει, κίνδυνόν φημι εἶναι φέρουσαν τοῖς παισὶν τὴν πολυμαθίαν. πῶς οὖν καὶ τί παραινοίης ἂν τῷ νομοφύλακι; τοῦ πέρι λέγεις; τοῦ πρὸς τί παράδειγμά ποτε ἀποβλέψας ἂν τὸ μὲν

that will be adequate? This, perhaps,—in which everyone will agree with me,—that every poet has uttered much that is well, and much also that is ill; and this being so, I affirm that a wide range of learning involves danger to children. What advice then would you give the Law-warden? About what? About the pattern by which he should be guided in respect of the particular subjects which he permits or forbids all the children to learn.