The general source of all pleasure, even of sensual pleasure, is propriety, the conformity with the aim. Pleasure is sensual when this propriety is manifested by means of some necessary law of nature which has for physical result the sensation of pleasure. Thus the movement of the blood, and of the animal life, when in conformity with the aim of nature, produces in certain organs, or in the entire organism, corporeal pleasure with all its varieties and all its modes. We feel this conformity by the means of agreeable sensation, but we arrive at no representation of it, either clear or confused.

Pleasure is free when we represent to ourselves the conformability, and when the sensation that accompanies this representation is agreeable. Thus all the representations by which we have notice that there is propriety and harmony between the end and the means, are for us the sources of free pleasure, and consequently can be employed to this end by the fine arts. Thus, all the representations can be placed under one of these heads: the good, the true, the perfect, the beautiful, the touching, the sublime. The good especially occupies our reason; the true and perfect, our intelligence; the beautiful interests both the intelligence and the imagination; the touching and the sublime, the reason and the imagination. It is true that we also take pleasure in the charm (Reiz) or the power called out by action from play, but art uses charm only to accompany the higher enjoyments which the idea of propriety gives to us. Considered in itself the charm or attraction is lost amid the sensations of life, and art disdains it together with all merely sensual pleasures.

We could not establish a classification of the fine arts only upon the difference of the sources from which each of them draws the pleasure which it affords us; for in the same class of the fine arts many sorts of pleasures may enter, and often all together. But in as far as a certain sort of pleasure is pursued as a principal aim, we can make of it, if not a specific character of a class properly so called, at least the principle and the tendency of a class in the works of art. Thus, for example, we could take the arts which, above all, satisfy the intelligence and imagination—consequently those which have as chief object the true, the perfect, and the beautiful—and unite them under the name of fine arts (arts of taste, arts of intelligence); those, on the other hand, which especially occupy the imagination and the reason, and which, in consequence, have for principal object the good, the sublime, and the touching, could be limited in a particular class under the denomination of touching arts (arts of sentiment, arts of the heart). Without doubt it is impossible to separate absolutely the touching from the beautiful, but the beautiful can perfectly subsist without the touching. Thus, although we are not authorized to base upon this difference of principle a rigorous classification of the liberal arts, it can at least serve to determine with more of precision the criterion, and prevent the confusion in which we are inevitably involved, when, drawing up laws of aesthetic things, we confound two absolutely different domains, as that of the touching and that of the beautiful.

The touching and the sublime resemble in this point, that both one and the other produce a pleasure by a feeling at first of displeasure, and that consequently (pleasure proceeding from suitability, and displeasure from the contrary) they give us a feeling of suitability which presupposes an unsuitability.

The feeling of the sublime is composed in part of the feeling of our feebleness, of our impotence to embrace an object; and, on the other side, of the feeling of our moral power—of this superior faculty which fears no obstacle, no limit, and which subdues spiritually that even to which our physical forces give way. The object of the sublime thwarts, then, our physical power; and this contrariety (impropriety) must necessarily excite a displeasure in us. But it is, at the same time, an occasion to recall to our conscience another faculty which is in us—a faculty which is even superior to the objects before which our imagination yields. In consequence, a sublime object, precisely because it thwarts the senses, is suitable with relation to reason, and it gives to us a joy by means of a higher faculty, at the same time that it wounds us in an inferior one.

The touching, in its proper sense, designates this mixed sensation, into which enters at the same time suffering and the pleasure that we find in suffering. Thus we can only feel this kind of emotion in the case of a personal misfortune, only when the grief that we feel is sufficiently tempered to leave some place for that impression of pleasure that would be felt by a compassionate spectator. The loss of a great good prostrates for the time, and the remembrance itself of the grief will make us experience emotion after a year. The feeble man is always the prey of his grief; the hero and the sage, whatever the misfortune that strikes them, never experience more than emotion.

Emotion, like the sentiment of the sublime, is composed of two affections—grief and pleasure. There is, then, at the bottom a propriety, here as well as there, and under this propriety a contradiction. Thus it seems that it is a contradiction in nature that man, who is not born to suffer, is nevertheless a prey to suffering, and this contradiction hurts us. But the evil which this contradiction does us is a propriety with regard to our reasonable nature in general, insomuch as this evil solicits us to act: it is a propriety also with regard to human society; consequently, even displeasure, which excites in us this contradiction, ought necessarily to make us experience a sentiment of pleasure, because this displeasure is a propriety. To determine in an emotion if it is pleasure or displeasure which triumphs, we must ask ourselves if it is the idea of impropriety or that of propriety which affects us the more deeply. That can depend either on the number of the aims reached or abortive, or on their connection with the final aim of all.

The suffering of the virtuous man moves us more painfully than that of the perverse man, because in the first case there is contradiction not only to the general destiny of man, which is happiness, but also to this other particular principle, viz., that virtue renders happy; whilst in the second case there is contradiction only with regard to the end of man in general. Reciprocally, the happiness of the wicked also offends us much more than the misfortune of the good man, because we find in it a double contradiction: in the first place vice itself, and, in the second place, the recompense of vice.

There is also this other consideration, that virtue is much more able to recompense itself than vice, when it triumphs, is to punish itself; and it is precisely for this that the virtuous man in misfortune would much more remain faithful to the cultus of virtue than the perverse man would dream of converting himself in prosperity.

But what is above all important in determining in the emotions the relation of pleasure and displeasure, is to compare the two ends—that which has been fulfilled and that which has been ignored—and to see which is the most considerable. There is no propriety which touches us so nearly as moral propriety, and no superior pleasure to that which we feel from it. Physical propriety could well be a problem, and a problem forever unsolvable. Moral propriety is already demonstrated. It alone is founded upon our reasonable nature and upon internal necessity. It is our nearest interest, the most considerable, and, at the same time, the most easily recognized, because it is not determined by any external element but by an internal principle of our reason: it is the palladium of our liberty.