Love is an affection which carries the attention of the mind beyond itself, and is the sense of a relation to some fellow creature as to its object. Being a complacency and a continued satisfaction in this object, it has, independent of any external event, and in the midst of disappointment and sorrow, pleasures and triumphs unknown to those who are guided by mere considerations of interest; in every change of condition, it continues entirely distinct from the sentiments which we feel on the subject of personal success or adversity. But as the care a man entertains for his own interest, and the attention his affection makes him pay to that of another, may have similar effects, the one on his own fortune, the other on that of his friend, we confound the principles from which he acts; we suppose that they are the same in kind, only referred to different objects; and we not only misapply the name of love, in conjunction with self, but, in a manner tending to degrade our nature, we limit the aim of this supposed selfish affection to the securing or accumulating the constituents of interest, of the means of mere animal life.
It is somewhat remarkable, that notwithstanding men value themselves so much on qualities of the mind, on parts, learning, and wit, on courage, generosity, and honour, those men are still supposed to be in the highest degree selfish or attentive to themselves, who are most careful of animal life, and who are least mindful of rendering that life an object worthy of care. It will be difficult, however, to tell why a good understanding, a resolute and generous mind, should not, by every man in his senses, be reckoned as much parts of himself, as either his stomach or his palate, and much more than his estate or his dress. The epicure, who consults his physician, how he may restore his relish for food, and, by creating an appetite, renew his enjoyment, might at least with an equal regard to himself, consult how he might strengthen his affection to a parent or a child, to his country or to mankind; and it is probable that an appetite of this sort would prove a source of enjoyment not less than the former.
By our supposed selfish maxims, notwithstanding, we generally exclude from among the objects of our personal cares, many of the happier and more respectable qualities of human nature. We consider affection and courage as mere follies, that lead us to neglect, or expose ourselves; we make wisdom consist in a regard to our interest; and without explaining what interest means, we would have it understood as the only reasonable motive of action with mankind. There is even a system of philosophy founded upon tenets of this sort, and such is our opinion of what men are likely to do upon selfish principles, that we think it must have a tendency very dangerous to virtue. But the errors of this system do not consist so much in general principles, as in their particular applications; not so much in teaching men to regard themselves, as in leading them to forget, that their happiest affections, their candour, and their independence of mind, are in reality parts of themselves. And the adversaries of this supposed selfish philosophy, where it makes self-love the ruling passion with mankind, have had reason to find fault, not so much with its general representations of human nature, as with the obtrusion of a mere innovation in language for a discovery in science.