§ 8. Comparative Theology will probably show that Ethnic Religions are arrested, or degenerate, and will come to an End, while the Catholic Religion is capable of a progressive Development. The religions of Persia, Egypt, Greece, Rome, have come to an end; having shared the fate of the national civilization of which each was a part. The religions of China, Islam, Buddha, and Judæa have all been arrested, and remain unchanged and seemingly unchangeable. Like great vessels anchored in a stream, the current of time flows past them, and each year they are further behind the spirit of the age, and less in harmony with its demands. Christianity alone, of all human religions, seems to possess the power of keeping abreast with the advancing civilization of the world. As the child's soul grows with his body, so that when he becomes a man it is a man's soul and not a child's, so the Gospel of Jesus continues the soul of all human culture. It continually drops its old forms and takes new ones. It passed out of its Jewish body under the guidance of Paul. In a speculative age it unfolded into creeds and systems. In a worshipping age it developed ceremonies and a ritual. When the fall of Rome left Europe without unity or centre, it gave it an organization and order through the Papacy. When the Papacy became a tyranny, and the Renaissance called for free thought, it suddenly put forth Protestantism, as the tree by the water-side sends forth its shoots in due season. Protestantism, free as air, opens out into the various sects, each taking hold of some human need; Lutheranism, Calvinism, Methodism, Swedenborgianism, or Rationalism. Christianity blossoms out into modern science, literature, art,--children who indeed often forget their mother, and are ignorant of their source, but which are still fed from her breasts and partake of her life. Christianity, the spirit of faith, hope, and love, is the deep fountain of modern civilization. Its inventions are for the many, not for the few. Its science is not hoarded, but diffused. It elevates the masses, who everywhere else have been trampled down. The friend of the people, it tends to free schools, a free press, a free government, the abolition of slavery, war, vice, and the melioration of society. We cannot, indeed, here _prove_ that Christianity is the cause of these features peculiar to modern life; but we find it everywhere associated with them, and so we can say that it only, of all the religions of mankind, has been capable of accompanying man in his progress from evil to good, from good to better.