οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
v. intrans.
P. and V. ἀστράπτειν; see flash.
subs.
P. and V. ἀστραπή, ἡ (Plat.); see flash.