Whether the degree of goodness or malice in the will depends on the degree of good or evil in the intention?

Objections

Objection 1 : It would seem that the degree of goodness in the will depends on the degree of good in the intention. Because on Mt. 12:35, "A good man out of the good treasure of his heart bringeth forth that which is good," a gloss says: "A man does as much good as he intends." But the intention gives goodness not only to the external action, but also to the act of the will, as stated above (Article [7]). Therefore the goodness of a man's will is according to the goodness of his intention.
Objection 2 : Further, if you add to the cause, you add to the effect. But the goodness of the intention is the cause of the good will. Therefore a man's will is good, according as his intention is good.
Objection 3 : Further, in evil actions, a man sins in proportion to his intention: for if a man were to throw a stone with a murderous intention, he would be guilty of murder. Therefore, for the same reason, in good actions, the will is good in proportion to the good intended.