Plato, Meno 77c

ἀγαθῶν; οὐ πάντες, ὤριστε, δοκοῦσί σοι τῶν ἀγαθῶν ἐπιθυμεῖν; οὐκ ἔμοιγε. ἀλλά τινες τῶν κακῶν; ναί. οἰόμενοι τὰ κακὰ ἀγαθὰ εἶναι, λέγεις, ἢ καὶ γιγνώσκοντες ὅτι κακά ἐστιν ὅμως ἐπιθυμοῦσιν αὐτῶν; ἀμφότερα ἔμοιγε δοκοῦσιν. ἦ γὰρ δοκεῖ τίς σοι, ὦ Μένων, γιγνώσκων τὰ κακὰ ὅτι κακά ἐστιν ὅμως ἐπιθυμεῖν αὐτῶν; μάλιστα. τί ἐπιθυμεῖν λέγεις; ἦ γενέσθαι αὐτῷ; γενέσθαι· τί γὰρ

in your opinion, my dear sir, desire the good? I think not. There are some who desire the evil? Yes. Thinking the evil to be good, do you mean, or actually recognizing it to be evil, and desiring it nevertheless? Both, I believe. Do you really believe, Meno, that a man knows the evil to be evil, and still desires it? Certainly. What do you mean by desires? Desires the possession of it?