Reason is the light, the sun, of the brain. It is the compass of the mind, the ever-constant Northern Star, the mountain peak that lifts itself above all clouds.
IX.
There were centuries of darkness when religion had control of Christendom. Superstition was almost universal. Not one in twenty thousand could read or write. During these centuries the people lived with their back to the sunrise, and pursued their way toward the dens of ignorance and faith. There was no progress, no invention, no discovery. On every hand cruelty and worship, persecution and prayer. The priests were the enemies of thought, of investigation. They were the shepherds, and the people were their sheep and it was their business to guard the flock from the wolves of thought and doubt. This world was of no importance compared with the next. This life was to be spent in preparing for the life to come. The gold and labor of men were wasted in building cathedrals and in supporting the pious and the useless. During these Dark Ages of Christianity, as I said before, nothing was invented, nothing was discovered, calculated to increase the well-being of men. The energies of Christendom were wasted in the vain effort to obtain assistance from the supernatural.
For centuries the business of Christians was to wrest from the followers of Mohammed the empty sepulcher of Christ. Upon the altar of this folly millions of lives were sacrificed, and yet the soldiers of the impostor were victorious, and the wretches who carried the banner of Christ were scattered like leaves before the storm.
There was, I believe, one invention during these ages. It is said that, in the thirteenth century, Roger Bacon, a Franciscan monk, invented gunpowder, but this invention was without a fellow. Yet we cannot give Christianity the credit, because Bacon was an infidel, and was great enough to say that in all things reason must be the standard. He was persecuted and imprisoned, as most sensible men were in those blessed days. The church was triumphant. The sceptre and mitre were in her hands, and yet her success was the result of force and fraud, and it carried within itself the seeds of its defeat. The church attempted the impossible. It endeavored to make the world of one belief; to force all minds to a common form, and utterly destroy the individuality of man. To accomplish this it employed every art and artifice that cunning could suggest It inflicted every cruelty by every means that malice could invent.
But, in spite of all, a few men began to think.
They became interested in the affairs of this world—in the great panorama of nature. They began to seek for causes, for the explanations of phenomena. They were not satisfied with the assertions of the church. These thinkers withdrew their gaze from the skies and looked at their own surroundings. They were unspiritual enough to desire comfort here. They became sensible and secular, worldly and wise.
What was the result? They began to invent, to discover, to find the relation between facts, the conditions of happiness and the means that would increase the well-being of their fellow-men.
Movable types were invented, paper was borrowed from the Moors, books appeared, and it became possible to save the intellectual wealth so that each generation could hand it to the next. History began to take the place of legend and rumor. The telescope was invented. The orbits of the stars were traced, and men became citizens of the universe. The steam engine was constructed, and now steam, the great slave, does the work of hundreds of millions of men. The Black Art, the impossible, was abandoned, and chemistry, the useful, took its place. Astrology became astronomy. Kepler discovered the three great laws, one of the greatest triumphs of human genius, and our constellation became a poem, a symphony. Newton gave us the mathematical expression of the attraction of gravitation. Harvey discovered the circulation of the blood. He gave us the fact, and Draper gave us the reason. Steamships conquered the seas and railways covered the land. Houses and streets were lighted with gas. Through the invention of matches fire became the companion of man. The art of photography became known; the sun became an artist. Telegraphs and cables were invented. The lightning became a carrier of thought, and the nations became neighbors. Anaesthetics were discovered and pain was lost in sleep. Surgery became a science. The telephone was invented—the telephone that carries and deposits in listening ears the waves of words. The phonograph, that catches and retains in marks and dots and gives again the echoes of our speech.
Then came electric light that fills the night with day, and all the wonderful machines that use the subtle force—the same force that leaps from the summer cloud to ravage and destroy.