οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
arte de tocar la flauta
αὐλητική: ἡ (sc. τέχνη) искусство игры на свирели Plat., Arst., Plut.
