Men found that the real was the useful; that what a man knows is better than what a ghost says; that an event is more valuable than a prophecy. They found that diseases were not produced by spirits, and could not be cured by frightening them away. They found that death was as natural as life. They began to study the anatomy and chemistry of the human body, and found that all was natural and within the domain of law. The conjurer and sorcerer were discarded, and the physician and surgeon employed. They found that the earth was not flat; that the stars were not mere specks. They found that being born under a particular planet had nothing to do with the fortunes of men. The astrologer was discharged and the astronomer took his place. They found that the earth had swept through the constellations for millions of ages. They found that good and evil were produced by natural causes, and not by ghosts; that man could not be good enough or bad enough to stop or cause a rain; that diseases were produced as naturally as grass, and were not sent as punishments upon man for failing to believe a certain creed. They found that man, through intelligence, could take advantage of the forces of nature--that he could make the waves, the winds, the flames, and the lightnings of heaven do his bidding and minister to his wants. They found that the ghosts knew nothing of benefit to man; that they were utterly ignorant of geology--of astronomy--of geography;--that they knew nothing of history;--that they were poor doctors and worse surgeons;--that they knew nothing of law and less of justice; that they were without brains, and utterly destitute of hearts; that they knew nothing of the rights of men; that they were despisers of women, the haters of progress, the enemies of science, and the destroyers of liberty. The condition of the world during the Dark Ages shows exactly the result of enslaving the bodies and souls of men. In those days there was no freedom. Labor was despised, and a laborer was considered but little above a beast. Ignorance, like a vast cowl, covered the brain of the world, and superstition ran riot with the imagination of man. The air was filled with angels, with demons and monsters. Credulity sat upon the throne of the soul, and Reason was an exiled king. A man to be distinguished must be a soldier or a monk. War and theology, that is to say, murder and hypocrisy, were the principal employments of man. Industry was a slave, theft was commerce; murder was war, hypocrisy was religion.