Some began to doubt the existence of evil spirits, or the interference of good ones in the affairs of the world. Finding out something about astronomy, the great number of the stars, the certain and continuous motions of the planets, and the fact that many of them were vastly larger than the earth; ascertaining something about the earth, the slow development of forms, the growth and distribution of plants, the formation of islands and continents, the parts played by fire, water and air through countless centuries; the kinship of all life; fixing the earth's place in the constellation of the sun; by experiment and research discovering a few secrets of chemistry; by the invention of printing, and the preservation and dissemination of facts, theories and thoughts, they were enabled to break a few chains of superstition, to free themselves a little from the dominion of the supernatural, and to set their faces toward the light. Slowly the number of investigators and thinkers increased, slowly the real facts were gathered, the sciences began to appear, the old beliefs grew a little absurd, the supernatural retreated and ceased to interfere in the ordinary affairs of men. Schools were founded, children were taught, books were printed and the thinkers increased. Day by day confidence lessened in the supernatural, and day by day men were more and more impressed with the idea that man must be his own protector, his own providence. From the mists and darkness of savagery and superstition emerged the dawn of the Natural. A sense of freedom took possession of the mind, and the soul began to dream of its power. On every side were invention and discovery, and bolder thought. The church began to regard the friends of science as its foes: Theologians resorted to chain and fagot--to mutilation and torture. The thinkers were denounced as heretics and Atheists--as the minions of Satan and the defamers of Christ. All the ignorance, prejudice and malice of superstition were aroused and all united for the destruction of investigation and thought. For centuries this conflict was waged. Every outrage was perpetrated, every crime committed by the believers in the supernatural. But, in spite of all, the disciples of the Natural increased, and the power of the church waned. Now the intelligence of the world is on the side of the Natural. Still the conflict goes on--the supernatural constantly losing, and the Natural constantly gaining. In a few years the victory of science over superstition will be complete and universal.