Another leading principle grows out of Kant's distinction of two worlds and two orders of reason. That distinction issued in a new theory of knowledge. It laid a new foundation for an idealistic construing of the universe. In one way it was the answer of a profoundly religious nature to the triviality and effrontery into which the great rationalistic movement had run out. By it the philosopher gave standing forever to much that prophets and mystics in every age had felt to be true, yet had never been able to prove by any method which the ordered reasoning of man had provided. Religion as feeling regained its place. Ethics was set once more in the light of the eternal. The soul of man became the object of a scientific study. There have been thus indicated three, at least, of the larger factors which enter into an interpretation of Christianity which may fairly be said to be new in the nineteenth century. They are new in a sense in which the intellectual elements entering into the reconsideration of Christianity in the age of the Reformation were not new. They are characteristic of the nineteenth century. They would naturally issue in an interpretation of Christianity in the general context of the life and thought of that century. The philosophical revolution inaugurated by Kant, with the general drift toward monism in the interpretation of the universe, separates from their forebears men who have lived since Kant, by a greater interval than that which divided Kant from Plato. The evolutionary view of nature, as developed from Schelling and Comte through Darwin to Bergson, divides men now living from the contemporaries of Kant in his youthful studies of nature, as those men were not divided from the followers of Aristotle.