Whether man can wish or do any good without grace?

Objections

Objection 1 : It would seem that man can wish and do good without grace. For that is in man's power, whereof he is master. Now man is master of his acts, and especially of his willing, as stated above (Question [1], Article [1]; Question [13], Article [6]). Hence man, of himself, can wish and do good without the help of grace.
Objection 2 : Further, man has more power over what is according to his nature than over what is beyond his nature. Now sin is against his nature, as Damascene says (De Fide Orth. ii, 30); whereas deeds of virtue are according to his nature, as stated above (Question [71], Article [1]). Therefore since man can sin of himself he can wish and do good.
Objection 3 : Further, the understanding's good is truth, as the Philosopher says (Ethic. vi, 2). Now the intellect can of itself know truth, even as every other thing can work its own operation of itself. Therefore, much more can man, of himself, do and wish good.