οὐ γὰρ πράξιν ἀγαθὴν, ἀλλὰ καὶ εὖ ποεῖν αὐτὴν → it does not suffice to do good–one must do it well
fīdens: entis, Part. and P. a., from fido.
fīdēns,¹² tis, p.-adj. de fido, qui se fie, qui a confiance : Cic. Tusc. 3, 13 || assuré, confiant : Cic. Tusc. 1, 10 || -dentior Amm. 30, 4, 19 ; -issimus Amm. 27, 10, 12.