Whether doing good to another is a cause of pleasure?

Objections

Objection 1 : It would seem that doing good to another is not a cause of pleasure. Because pleasure is caused by one's obtaining one's proper good, as stated above (Articles [1],5; Question [31], Article [1]). But doing good pertains not to the obtaining but to the spending of one's proper good. Therefore it seems to be the cause of sadness rather than of pleasure.
Objection 2 : Further, the Philosopher says (Ethic. iv, 1) that "illiberality is more connatural to man than prodigality." Now it is a mark of prodigality to do good to others; while it is a mark of illiberality to desist from doing good. Since therefore everyone takes pleasure in a connatural operation, as stated in Ethic. vii, 14 and x, 4, it seems that doing good to others is not a cause of pleasure.
Objection 3 : Further, contrary effects proceed from contrary causes. But man takes a natural pleasure in certain kinds of ill-doing, such as overcoming, contradicting or scolding others, or, if he be angry, in punishing them, as the Philosopher says (Rhet. i, 11). Therefore doing good to others is a cause of sadness rather than pleasure.