οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
P. and V. χαλᾶν, ἀνιέναι.
be unstrung, met.: see unmanned.