Plato, Laws 706d

μυρίων, ἀλλὰ τοὐναντίον· ἔθη γὰρ πονηρὰ οὐδέποτε ἐθίζειν δεῖ, καὶ ταῦτα τὸ τῶν πολιτῶν βέλτιστον μέρος. ἦν δέ που τοῦτό γε καὶ παρʼ Ὁμήρου λαβεῖν, ὅτι τὸ ἐπιτήδευμα ἦν τὸ τοιοῦτον οὐ καλόν. Ὀδυσσεὺς γὰρ αὐτῷ λοιδορεῖ τὸν Ἀγαμέμνονα, τῶν Ἀχαιῶν τότε ὑπὸ τῶν Τρώων κατεχομένων τῇ μάχῃ, κελεύοντα τὰς ναῦς εἰς τὴν θάλατταν καθέλκειν, ὁ δὲ χαλεπαίνει τε αὐτῷ καὶ λέγει—

for one ought never to habituate men to base habits, and least of all the noblest section of the citizens. That such an institution is not a noble one might have been learnt even from Homer. For he makes Odysseus abuse Agamemnon for ordering the Achaeans to haul down their ships to the sea, when they were being pressed in fight by the Trojans; and in his wrath he speaks thus:—