Self-love is a principle in human nature of such extensive energy, and the interest of each individual is, in general, so closely connected with that of the community, that those philosophers were excusable, who fancied that all our concern for the public might be resolved into a concern for our own happiness and preservation. They saw every moment, instances of approbation or blame, satisfaction or displeasure towards characters and actions; they denominated the objects of these sentiments, VIRTUES, or VICES; they observed, that the former had a tendency to increase the happiness, and the latter the misery of mankind; they asked, whether it were possible that we could have any general concern for society, or any disinterested resentment of the welfare or injury of others; they found it simpler to consider all these sentiments as modifications of self-love; and they discovered a pretence, at least, for this unity of principle, in that close union of interest, which is so observable between the public and each individual.
But notwithstanding this frequent confusion of interests, it is easy to attain what natural philosophers, after Lord Bacon, have affected to call the experimentum crucis, or that experiment which points out the right way in any doubt or ambiguity. We have found instances, in which private interest was separate from public; in which it was even contrary: And yet we observed the moral sentiment to continue, notwithstanding this disjunction of interests. And wherever these distinct interests sensibly concurred, we always found a sensible increase of the sentiment, and a more warm affection to virtue, and detestation of vice, or what we properly call, GRATITUDE and REVENGE. Compelled by these instances, we must renounce the theory, which accounts for every moral sentiment by the principle of self-love. We must adopt a more public affection, and allow, that the interests of society are not, even on their own account, entirely indifferent to us. Usefulness is only a tendency to a certain end; and it is a contradiction in terms, that anything pleases as means to an end, where the end itself no wise affects us. If usefulness, therefore, be a source of moral sentiment, and if this usefulness be not always considered with a reference to self; it follows, that everything, which contributes to the happiness of society, recommends itself directly to our approbation and good-will. Here is a principle, which accounts, in great part, for the origin of morality: And what need we seek for abstruse and remote systems, when there occurs one so obvious and natural?
[FOOTNOTE: It is needless to push our researches so far as to ask, why we have humanity or a fellow-feeling with others. It is sufficient, that this is experienced to be a principle in human nature. We must stop somewhere in our examination of causes; and there are, in every science, some general principles, beyond which we cannot hope to find any principle more general. No man is absolutely indifferent to the happiness and misery of others. The first has a natural tendency to give pleasure; the second, pain. This every one may find in himself. It is not probable, that these principles can be resolved into principles more simple and universal, whatever attempts may have been made to that purpose. But if it were possible, it belongs not to the present subject; and we may here safely consider these principles as original; happy, if we can render all the consequences sufficiently plain and perspicuous!]
Have we any difficulty to comprehend the force of humanity and benevolence? Or to conceive, that the very aspect of happiness, joy, prosperity, gives pleasure; that of pain, suffering, sorrow, communicates uneasiness? The human countenance, says Horace ['Uti ridentibus arrident, ita flentibus adflent Humani vultus,' — Hor.], borrows smiles or tears from the human countenance. Reduce a person to solitude, and he loses all enjoyment, except either of the sensual or speculative kind; and that because the movements of his heart are not forwarded by correspondent movements in his fellow-creatures. The signs of sorrow and mourning, though arbitrary, affect us with melancholy; but the natural symptoms, tears and cries and groans, never fail to infuse compassion and uneasiness. And if the effects of misery touch us in so lively a manner; can we be supposed altogether insensible or indifferent towards its causes; when a malicious or treacherous character and behaviour are presented to us?
We enter, I shall suppose, into a convenient, warm, well- contrived apartment: We necessarily receive a pleasure from its very survey; because it presents us with the pleasing ideas of ease, satisfaction, and enjoyment. The hospitable, good-humoured, humane landlord appears. This circumstance surely must embellish the whole; nor can we easily forbear reflecting, with pleasure, on the satisfaction which results to every one from his intercourse and good-offices.
His whole family, by the freedom, ease, confidence, and calm enjoyment, diffused over their countenances, sufficiently express their happiness. I have a pleasing sympathy in the prospect of so much joy, and can never consider the source of it, without the most agreeable emotions.
He tells me, that an oppressive and powerful neighbour had attempted to dispossess him of his inheritance, and had long disturbed all his innocent and social pleasures. I feel an immediate indignation arise in me against such violence and injury.
But it is no wonder, he adds, that a private wrong should proceed from a man, who had enslaved provinces, depopulated cities, and made the field and scaffold stream with human blood. I am struck with horror at the prospect of so much misery, and am actuated by the strongest antipathy against its author.
In general, it is certain, that, wherever we go, whatever we reflect on or converse about, everything still presents us with the view of human happiness or misery, and excites in our breast a sympathetic movement of pleasure or uneasiness. In our serious occupations, in our careless amusements, this principle still exerts its active energy.
A man who enters the theatre, is immediately struck with the view of so great a multitude, participating of one common amusement; and experiences, from their very aspect, a superior sensibility or disposition of being affected with every sentiment, which he shares with his fellow-creatures.
He observes the actors to be animated by the appearance of a full audience, and raised to a degree of enthusiasm, which they cannot command in any solitary or calm moment.
Every movement of the theatre, by a skilful poet, is communicated, as it were by magic, to the spectators; who weep, tremble, resent, rejoice, and are inflamed with all the variety of passions, which actuate the several personages of the drama.
Where any event crosses our wishes, and interrupts the happiness of the favourite characters, we feel a sensible anxiety and concern. But where their sufferings proceed from the treachery, cruelty, or tyranny of an enemy, our breasts are affected with the liveliest resentment against the author of these calamities. It is here esteemed contrary to the rules of art to represent anything cool and indifferent. A distant friend, or a confident, who has no immediate interest in the catastrophe, ought, if possible, to be avoided by the poet; as communicating a like indifference to the audience, and checking the progress of the passions.
Few species of poetry are more entertaining than PASTORAL; and every one is sensible, that the chief source of its pleasure arises from those images of a gentle and tender tranquillity, which it represents in its personages, and of which it communicates a like sentiment to the reader. Sannazarius, who transferred the scene to the sea-shore, though he presented the most magnificent object in nature, is confessed to have erred in his choice. The idea of toil, labour, and danger, suffered by the fishermen, is painful; by an unavoidable sympathy, which attends every conception of human happiness or misery.