Plato, Laws 647c

ἕκαστον· ὧν δʼ ἑκάτερον ἕνεκα, διῃρήμεθα. πάνυ μὲν οὖν. καὶ μὴν ἄφοβόν γε ἕκαστον βουληθέντες ποιεῖν φόβων πολλῶν τινων, εἰς φόβον ἄγοντες αὐτὸν μετὰ νόμου, τοιοῦτον ἀπεργαζόμεθα. φαινόμεθα. τί δʼ ὅταν ἐπιχειρῶμέν τινα φοβερὸν ποιεῖν μετὰ δίκης; ἆρʼ οὐκ ἀναισχυντίᾳ συμβάλλοντας αὐτὸν καὶ προσγυμνάζοντας νικᾶν δεῖ ποιεῖν διαμαχόμενον αὑτοῦ ταῖς ἡδοναῖς; ἢ τῇ μὲν δειλίᾳ τῇ ἐν αὑτῷ προσμαχόμενον καὶ

and that for the several reasons we have now explained. Certainly. Moreover, when we desire to make a person fearless in respect of a number of fears, it is by drawing him, with the help of the law, into fear that we make him such. Apparently. And how about the opposite case, when we attempt with the aid of justice to make a man fearful? Is it not by pitting him against shamelessness and exercising him against it that we must make him victorious in the fight against his own pleasures? Or shall we say that, whereas in the case of courage it is only by fighting and conquering his innate cowardice