οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
adverb from a comparative of the accusative case of νοῦς and ἔχω; in a mind-having way, i.e. prudently: discreetly.
