When Franklin showed the nature of lightning, the voice of God was displaced from that of thunder. The sciences of ethics and psychology, like modern Franklins, show plainly that conscience is no more the voice of God than is thunder. Schopenhauer, commenting on Kantian theology, offers the suggestion that Kant was really a sceptic, but became frightened when he contemplated what he thought would happen to public morals if belief were to be denied to the masses. Nietzsche speaks of Kant: "With the aid of his concept of 'Practical Reason,' he produced a special kind of reason, for use on occasions when reason cannot function: namely, when the sublime command, 'Thou shalt,' resounds." In his old age Kant became more bold, and perhaps voiced his true views, for we find that in "Religion Within the Limits of Pure Reason," he is actively antagonistic to ecclesiasticism, so much so that, for publishing this work, he was censured by the Prussian king, who wrote, "Our highest person has been greatly displeased to observe how you misuse your philosophy to undermine and destroy many of the most important and fundamental doctrines of the Holy Scriptures and of Christianity." Indeed, many a man approaching Kant with a firm theistic belief finds his belief somewhat shaken by Kantian logic. Schopenhauer's "Will" has nothing in common with the God-idea as commonly held, and he was bitterly anti-theistic. In a dialogue entitled "Religion," he places these words in the mouth of his character Philalethes: "A certain amount of general ignorance is the condition of all religions, the element in which alone they can exist. And as soon as astronomy, natural science, geology, history, the knowledge of countries and peoples, have spread their light broadcast, and philosophy finally is permitted to say a word, every faith founded on miracles and revelation must disappear; and philosophy takes its place." Hegel's deification of thought or reason left no room for personal immortality, and his query, "Do you expect a tip for having nursed your ailing mother, and refrained from poisoning your brother?" is well known. A vague conception of a deity whose existence can be proved, if it can be proved at all, only by the abstruse arguments of a Hegel is not a god of practical service to the theists. Schelling was pantheistic, and Feuerbach played havoc with the philosophic evidence for God and immortality and treated all religions as a dream and an illusion.