There is another set of qualities ascribed to the actions and conduct of mankind, distinct from their propriety or impropriety, their decency or ungracefulness, and which are the objects of a distinct species of approbation and disapprobation. These are Merit and Demerit, the qualities of deserving reward, and of deserving punishment.

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.

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 punish, or to 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.

There are some other passions, besides gratitude and resentment, which interest us in the happiness or misery of others; but there are none which so directly excite us to be the instruments of either. The love and esteem which grow upon acquaintance and habitual approbation, necessarily lead us to be pleased with the good fortune of the man who is the object of such agreeable emotions, and consequently, to be willing to lend a hand to promote it. Our love, however, is fully satisfied, though his good fortune should be brought about without our assistance. All that this passion desires is to see him happy, without regarding who was the author of his prosperity. But gratitude is not to be satisfied in this manner. If the person to whom we owe many obligations, is made happy without our assistance, though it pleases our love, it does not content our gratitude. Till we have recompensed him, till we ourselves have been instrumental in promoting his happiness, we feel ourselves still loaded with that debt which his past services have laid upon us.

The hatred and dislike, in the same manner, which grow upon habitual disapprobation, would often lead us to take a malicious pleasure in the misfortune of the man whose conduct and character excite so painful a passion. But though dislike and hatred harden us against all sympathy, and sometimes dispose us even to rejoice at the distress of another, yet, if there is no resentment in the case, if neither we nor our friends have received any great personal provocation, these passions would not naturally lead us to wish to be instrumental in bringing it about. Though we could fear no punishment in consequence of our having had some hand in it, we would rather that it should happen by other means. To one under the dominion of violent hatred it would be agreeable, perhaps, to hear, that the person whom he abhorred and detested was killed by some accident. But if he had the least spark of justice, which, though this passion is not very favourable to virtue, he might still have, it would hurt him excessively to have been himself, even without design, the occasion of this misfortune. Much more would the very thought of voluntarily contributing to it shock him beyond all measure. He would reject with horror even the imagination of so execrable a design; and if he could imagine himself capable of such an enormity, he would begin to regard himself in the same odious light in which he had considered the person who was the object of his dislike. But it is quite otherwise with resentment: if the person who had done us some great injury, who had murdered our father or our brother, for example, should soon afterwards die of a fever, or even be brought to the scaffold upon account of some other crime, though it might sooth our hatred, it would not fully gratify our resentment. Resentment would prompt us to desire, not only that he should be punished, but that he should be punished by our means, and upon account of that particular injury which he had done to us. Resentment cannot be fully gratified, unless the offender is not only made to grieve in his turn, but to grieve for that particular wrong which we have suffered from him. He must be made to repent and be sorry for this very action, that others, through fear of the like punishment, may be terrified from being guilty of the like offence. The natural gratification of this passion tends, of its own accord, to produce all the political ends of punishment; the correction of the criminal, and the example to the public.

Gratitude and resentment, therefore, are the sentiments which most immediately and directly prompt to reward and to punish. To us, therefore, he must appear to deserve reward, who appears to be the proper and approved object of gratitude; and he to deserve punishment, who appears to be that of resentment.