There is a natural principle of benevolence in man, which is in some degree to society, what self-love is to the individual. And if there be in mankind any disposition to friendship; if there be any such thing as compassion, for compassion is momentary love; if there be any such things as the paternal of filial affections; if there be any affection in human nature, the object and end of which is the good of another; this is itself benevolence, or the love of another. Be it even so short, be it in ever so low a degree, or ever so unhappily confined; it proves the assertion, and points out what we were designed for, as really as though it were in a higher degree and more extensive. I must however remind you, that though benevolence and self-love are different; though the former tends most directly to public good, and the latter private; yet there are so perfectly coincident, that the greatest satisfactions to ourselves depend: upon our having benevolence in a due degree; and that self-love is one chief security of our right behaviour towards society. It may be added, that their mutual coinciding, so that we can scarce promote one without the other, is equally a proof that we were made for both.
Joseph Butler, Fifteen Sermons Preached at the Rolls Chapel, Sermon I: Upon the Social Nature of Man