What books in the circulating libraries circulate? How we glow over these novels of passion, when the story is told with any spark of truth and nature! And what fastens attention, in the intercourse of life, like any passage betraying affection between two parties? Perhaps we never saw them before, and never shall meet them again. But we see them exchange a glance, or betray a deep emotion, and we are no longer strangers. We understand them, and take the warmest interest in the development of the romance. All mankind love a lover.

—Ralph Waldo Emerson, “Love”