How can evil be cast out? Men have usually pursued two paths to eliminate evil and thereby save the world. The first calls upon man to remove evil through his own power and ingenuity in the strange conviction that by thinking, inventing, and governing, he will at last conquer the nagging forces of evil. Give people a fair chance and a decent education, and they will save themselves. This idea, sweeping across the modern world like a plague, has ushered God out and escorted man in and has substituted human ingenuity for divine guidance. Some people suggest that this concept was introduced during the Renaissance when reason dethroned religion, or later when Darwin’s Origin of Species replaced belief in creation by the theory of evolution, or when the industrial revolution turned the hearts of men to material comforts and physical conveniences. At any rate, the idea of the adequacy of man to solve the evils of history captured the minds of people, giving rise to the easy optimism of the nineteenth century, the doctrine of inevitable progress, Rousseau’s maxim of “the original goodness of human nature,” and Condorcet’s conviction that by reason alone the whole world would soon be cleansed of crime, poverty, and war.