οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
ου, ὁ,
A = μυττός, Hsch. μυτικίζειν· κολάζειν, Id.
[Seite 223] ὁ, = μυττός, Hesych.