οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
σοφιστάς skilled craftsman sc. of poetry μελέταν δὲ σοφισταῖς Διὸς ἕκατι πρόσβαλον σεβιζόμενοι (I. 5.28)
