We see the earth grow from a fire-ball to be the home of man; we know its anatomy; we read its history; and we behold races of animals which passed away ages before the eye of man looked forth upon the boundless mystery and saw the shadow of the presence of the infinite God. Better than the Greeks we know the history of Greece; than the Romans that of Rome. Words that were never written have whispered to us the dreams and hopes of people that perished and left no record; and the more we have learned of the past the more clearly do we perceive how far the present age surpasses all others in knowledge and in power. The mighty movement by which this development has been caused, has not slackened, but seems each day to gain new force; and the marvelous changes, political, social, moral, intellectual, and physical, which give character to the nineteenth century are but the prelude to a drama which shall make all past achievements of our race appear weak and contemptible. To imagine that our superiority is merely mechanical and material is to fail to see things as they are. Greater individuals may have lived than now are living, but never before has the world been governed with so much wisdom and so much justice; and the power back of our progress is intellectual, moral, and religious. Science is not material. It is the product of intellect and will; and the great founders of modern science, Copernicus, Kepler, Bacon, Descartes, Galileo, Newton, Leibnitz, Ampere, Liebig, Fresnel, Faraday, and Mayer, were Christians. "However paradoxical it may sound," says DuBois-Reymond, "modern science owes its origin to Christianity."