We can now better understand the statement previously made that the personification of conscience was the peculiar artifice, the “useful dodge,” of a certain school of ethical thinkers in the XVIII century. Consequently it is erroneous to suppose that the commonplace view of this phenomenon has always held undisputed sway over theoretical ethics. It had no place whatever in the minds of Greek ethical writers. Plato, Socrates, Aristotle, and their contemporaries founded the science of ethics without even dreaming that there was a conscience. Epictetus, Epicurus, and Marcus Aurelius showed no poverty of constructive thought for the lack of it. Even Helvetius, a contemporary of the intuitionists, rejected it as spurious when he wrote: “He who will warrant his virtue in every situation is either an impostor or a fool; characters equally to be mistrusted.” Most people who have heard the name of John Locke will recall his arguments against the assumptions of the moral intuitionists in those passages where he combats the theory of innate moral ideas. According to Locke, all such ideas would have to be (1) independent of geographical location and climate, (2) independent of the age of the person and of his training, and (3) recognized by all persons as fundamental. But none of these conditions are found to be satisfied by anyone who makes the shortest pilgrimage through the world in the search for these statistics. And consequently the intellectually honest Locke rejects the philosophical theory of conscience, independently of his recognition of the facts of self-approval and self-disapproval. It remained, however, for John Stuart Mill to foreshadow the beginning of the end of this fantastic theory of the moral faculty in Chapter III of his “Utilitarianism.” He writes:— “The internal sanction of duty, whatever our standard of duty may be, is one and the same—a feeling in our own mind; a pain, more or less intense, attendant on violation of duty, which in properly cultivated moral natures rises, in more serious cases, into shrinking from it as an impossibility. This feeling ... is the essence of Conscience; though in that complex phenomenon as it actually exists, the simple fact is in general all encrusted over with collateral associations, derived from sympathy, from love, and still more from fear; from all the forms of religious feeling; from the recollections of childhood and of all our past life; from self-esteem, desire of the esteem of others, and occasionally even self-abasement.”