οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
prŏpĕrātus: a, um, Part. and P. a., from propero.
prŏpĕrātus, a, um, part. de propero || adjt, fait à la hâte, rapide : Ov. Tr. 3, 3, 34 ; M. 9, 586 ; -tior Sol. 26 || v. propero.