Why do I here make these reflections on what seems an irrelevant subject? I do it because on studying the various ethical theories I am struck with the fact that they are all characterized either by entire absence of the idea of causation, or by inadequate presence of it. Whether theological, political, intuitional, or utilitarian, they all display, if not in the same degree, still, each in a large degree, the defects which result from this lack. We will consider them in the order named. § 18. The school of morals properly to be considered as the still extant representative of the most ancient school, is that which recognizes no other rule of conduct than the alleged will of God. It originates with the savage whose only restraint beyond fear of his fellow man, is fear of an ancestral spirit; and whose notion of moral duty as distinguished from his notion of social prudence, arises from this fear. Here the ethical doctrine and the religious doctrine are identical--have in no degree differentiated. This primitive form of ethical doctrine, changed only by the gradual dying out of multitudinous minor supernatural agents and accompanying development of one universal supernatural agent, survives in great strength down to our own day. Religious creeds, established and dissenting, all embody the belief that right and wrong are right and wrong simply in virtue of divine enactment. And this tacit assumption has passed from systems of theology into systems of morality; or rather let us say that moral systems in early stages of development, little differentiated from the accompanying theological systems, have participated in this assumption. We see this in the works of the Stoics, as well as in the works of certain Christian moralists. Among recent ones I may instance the _Essays on the Principles of Morality_, by Jonathan Dymond, a Quaker, which makes "the authority of the Deity the sole ground of duty, and His communicated will the only ultimate standard of right and wrong." Nor is it by writers belonging to so relatively unphilosophical a sect only that this view is held; it is held with a difference by writers belonging to sects contrariwise distinguished. For these assert that in the absence of belief in a deity, there would be no moral guidance; and this amounts to asserting that moral truths have no other origin than the will of God, which, if not considered as revealed in sacred writings, must be considered as revealed in conscience.