Avarice, ambition, vanity, and all passions vulgarly, though improperly, comprised under the denomination of SELF-LOVE, are here excluded from our theory concerning the origin of morals, not because they are too weak, but because they have not a proper direction for that purpose. The notion of morals implies some sentiment common to all mankind, which recommends the same object to general approbation, and makes every man, or most men, agree in the same opinion or decision concerning it. It also implies some sentiment, so universal and comprehensive as to extend to all mankind, and render the actions and conduct, even of the persons the most remote, an object of applause or censure, according as they agree or disagree with that rule of right which is established. These two requisite circumstances belong alone to the sentiment of humanity here insisted on. The other passions produce in every breast, many strong sentiments of desire and aversion, affection and hatred; but these neither are felt so much in common, nor are so comprehensive, as to be the foundation of any general system and established theory of blame or approbation. When a man denominates another his ENEMY, his RIVAL, his ANTAGONIST, his ADVERSARY, he is understood to speak the language of self-love, and to express sentiments, peculiar to himself, and arising from his particular circumstances and situation. But when he bestows on any man the epithets of VICIOUS or ODIOUS or DEPRAVED, he then speaks another language, and expresses sentiments, in which he expects all his audience are to concur with him. He must here, therefore, depart from his private and particular situation, and must choose a point of view, common to him with others; he must move some universal principle of the human frame, and touch a string to which all mankind have an accord and symphony. If he mean, therefore, to express that this man possesses qualities, whose tendency is pernicious to society, he has chosen this common point of view, and has touched the principle of humanity, in which every man, in some degree, concurs. While the human heart is compounded of the same elements as at present, it will never be wholly indifferent to public good, nor entirely unaffected with the tendency of characters and manners. And though this affection of humanity may not generally be esteemed so strong as vanity or ambition, yet, being common to all men, it can alone be the foundation of morals, or of any-general system of blame or praise. One man's ambition is not another's ambition, nor will the same event or object satisfy both; but the humanity of one man is the humanity of every one, and the same object touches this passion in all human creatures.