It has already been observed, that the sentiment or affection of the heart, from which any action proceeds, and upon which its whole virtue or vice depends, may be considered under two different aspects, or in two different relations: first, in relation to the cause or object which excites it; and, secondly, in relation to the end which it proposes, or to the effect which it tends to produce: that upon the suitableness or unsuitableness, upon the proportion or disproportion, which the affection seems to bear to the cause or object which excites it, depends the propriety or impropriety, the decency or ungracefulness of the consequent action; and that upon the beneficial or hurtful effects which the affection proposes or tends to produce, depends the merit or demerit, the good or ill desert of the action to which it gives occasion. Wherein consists our sense of the propriety or impropriety of actions, has been explained in the former part of this discourse. We come now to consider, wherein consists that of their good or ill desert. CHAP. I. _That whatever appears to be the proper object of gratitude, appears to deserve reward; and that, in the same manner, whatever appears to be the proper object of resentment, appears to deserve punishment._ To us, therefore, that action must appear to deserve reward, which appears to be the proper and approved object of that sentiment, which most immediately and directly prompts us to reward, or to do good to another. And in the same manner, that action must appear to deserve punishment, which appears to be the proper and approved object of that sentiment which most immediately and directly prompts us to publish, or inflict evil upon another. The sentiment which most immediately and directly prompts us to reward, is gratitude; that which most immediately and directly prompts us to punish, is resentment. To us, therefore, that action must appear to deserve reward, which appears to be the proper and approved object of gratitude; as, on the other hand, that action must appear to deserve punishment, which appears to be the proper and approved object of resentment. To reward, is to recompense, to remunerate, to return good for good received. To punish, too, is to recompense, to remunerate, though in a different manner; it is to return evil for evil that has been done.