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 lies in the promise of a future life of which otherwise we should have no knowledge. If existence after death were proved and became a scientific fact like the law of gravitation, a revealed religion might lose its power. For the whole point of a revealed religion is that it is not based on scientific facts. So far as I know, those who are convinced, by spiritualistic experiments, that they have actual converse with spirits of the dead, and for whom this converse, however delusive the evidence may be, is a fact proved by experience, cease to feel any interest in religion. They possess knowledge and can dispense with faith.

The havoc which science and historical criticism have wrought among orthodox beliefs during the last hundred years was not tamely submitted to, and controversy was not the only weapon employed. Strauss was deprived of his professorship at Tübingen, and his career was ruined. Renan, whose sensational Life of Jesus also rejected the supernatural, lost his chair in the Collège de France. Büchner was driven from Tübingen (1855) for his book on Force and Matter, which, appealing to the general public, set forth the futility of supernatural explanations of the universe. An attempt was made to chase Haeckel from Jena. In recent years,