Back of every conscious movement lies the load stone of a desire. Back of every instinctive motion of the Iowliest organism, every re?ex twitch of a muscle of beast or of man, is a chain of organic impulses lead ing no less surely, though it be by the tortuous route of heredity, to a primeval desire. And in the last analysis all desires, whatever their seeming diversity of character, may be reduced to one: Stated broadly, there is no desire but the desire for happiness.