It is necessary to distinguish clearly between the Demon and the Devil, though, for some purposes, they must be mentioned together. The world was haunted with demons for many ages before there was any embodiment of their spirit in any central form, much less any conception of a Principle of Evil in the universe. The early demons had no moral character, not any more than the man-eating tiger. There is no outburst of moral indignation mingling with the shout of victory when Indra slays Vritra, and Apollo's face is serene when his dart pierces the Python. It required a much higher development of the moral sentiment to give rise to the conception of a devil. Only that intensest light could cast so black a shadow athwart the world as the belief in a purely malignant spirit. To such a conception--love of evil for its own sake--the word Devil is limited in this work; Demon is applied to beings whose harmfulness is not gratuitous, but incidental to their own satisfactions. Deity and Demon are from words once interchangeable, and the latter has simply suffered degradation by the conventional use of it to designate the less beneficent powers and qualities, which originally inhered in every deity, after they were detached from these and separately personified. Every bright god had his shadow, so to say; and under the influence of Dualism this shadow attained a distinct existence and personality in the popular imagination. The principle having once been established, that what seemed beneficent and what seemed the reverse must be ascribed to different powers, it is obvious that the evolution of demons must be continuous, and their distribution co-extensive with the ills that flesh is heir to. CHAPTER III. DEGRADATION. The degradation of deities--Indicated in names--Legends of their fall--Incidental signs of the divine origin of demons and devils.