[Footnote: One may venture to affirm, that there is no human nature, to whom the appearance of happiness (where envy or revenge has no place) does not give pleasure, that of misery, uneasiness. This seems inseparable from our make and constitution. But they are only more generous minds, that are thence prompted to seek zealously the good of others, and to have a real passion for their welfare. With men of narrow and ungenerous spirits, this sympathy goes not beyond a slight feeling of the imagination, which serves only to excite sentiments of complacency or ensure, and makes them apply to the object either honorable or dishonorable appellations. A griping miser, for instance, praises extremely industry and frugality even in others, and sets them, in his estimation, above all the other virtues. He knows the good that results from them, and feels that species of happiness with a more lively sympathy, than any other you could represent to him; though perhaps he would not part with a shilling to make the fortune of the industrious man, whom he praises so highly.]
Let us suppose a person originally framed so as to have no manner of concern for his fellow-creatures, but to regard the happiness and misery of all sensible beings with greater indifference than even two contiguous shades of the same colour. Let us suppose, if the prosperity of nations were laid on the one hand, and their ruin on the other, and he were desired to choose; that he would stand like the schoolman’s ass, irresolute and undetermined, between equal motives; or rather, like the same ass between two pieces of wood or marble, without any inclination or propensity to either side. The consequence, I believe, must be allowed just, that such a person, being absolutely unconcerned, either for the public good of a community or the private utility of others, would look on every quality, however pernicious, or however beneficial, to society, or to its possessor, with the same indifference as on the most common and uninteresting object.
But if, instead of this fancied monster, we suppose a man to form a judgement or determination in the case, there is to him a plain foundation of preference, where everything else is equal; and however cool his choice may be, if his heart be selfish, or if the persons interested be remote from him; there must still be a choice or distinction between what is useful, and what is pernicious. Now this distinction is the same in all its parts, with the moral distinction, whose foundation has been so often, and so much in vain, enquired after. The same endowments of the mind, in every circumstance, are agreeable to the sentiment of morals and to that of humanity; the same temper is susceptible of high degrees of the one sentiment and of the other; and the same alteration in the objects, by their nearer approach or by connexions, enlivens the one and the other. By all the rules of philosophy, therefore, we must conclude, that these sentiments are originally the same; since, in each particular, even the most minute, they are governed by the same laws, and are moved by the same objects.