At his bidding the earth began to revolve. At the command of his genius it commenced its grand flight mid the eternal constellations round the sun.
For fifty years his discoveries were disregarded. All at once, by the exertions of Galileo, they were kindled into so grand a conflagration as to consume the philosophy of Aristotle, to alarm the hierarchy of Rome, and to threaten the existence of every opinion not founded upon experience, observation, and reason.
The earth was no longer considered a universe, governed by the caprices of some revengeful Deity, who had made the stars out of what he had left after completing the world, and had stuck them in the sky simply to adorn the night.
I have said this much concerning astronomy because it was the first splendid step forward! The first sublime blow that shattered the lance and shivered the shield of superstition; the first real help that man received from heaven; because it was the first great lever placed beneath the altar of a false religion; the first revelation of the infinite to man; the first authoritative declaration, that the universe is governed by law; the first science that gave the lie direct to the cosmogony of barbarism, and because it is the sublimest victory that the reason has achieved.
In speaking of astronomy, I have confined myself to the discoveries made since the revival of learning. Long ago, on the banks of the Ganges, ages before Copernicus lived, Aryabhatta taught that the earth is a sphere, and revolves on its own axis. This, however, does not detract from the glory of the great German. The discovery of the Hindu had been lost in the midnight of Europe—in the age of faith, and Copernicus was as much a discoverer as though Aryabhatta had never lived.
In this short address there is no time to speak of other sciences, and to point out the particular evidence furnished by each, to establish the dominion of law, nor to more than mention the name of Descartes, the first who undertook to give an explanation of the celestial motions, or who formed the vast and philosophic conception of reducing all the phenomena of the universe to the same law; of Montaigne, one of the heroes of common sense; of Galvani, whose experiments gave the telegraph to the world; of Voltaire, who contributed more than any other of the sons of men to the destruction of religious intolerance; of August Comte, whose genius erected to itself a monument that still touches the stars; of Guttenberg, Watt, Stephenson, Arkwright, all soldiers of science, in the grand army of the dead kings.
The glory of science is, that it is freeing the soul—breaking the mental manacles—getting the brain out of bondage—giving courage to thought—filling the world with mercy, justice, and joy.
Science found agriculture plowing with a stick—reaping with a sickle—commerce at the mercy of the treacherous waves and the inconstant winds—a world without books—without schools—man denying the authority of reason, employing his ingenuity in the manufacture of instruments of torture, in building inquisitions and cathedrals. It found the land filled with malicious monks—with persecuting Protestants, and the burners of men. It found a world full of fear; ignorance upon its knees; credulity the greatest virtue; women treated like beasts of burden; cruelty the only means of reformation.
It found the world at the mercy of disease and famine; men trying to read their fates in the stars, and to tell their fortunes by signs and wonders; generals thinking to conquer their enemies by making the sign of the cross, or by telling a rosary. It found all history full of petty and ridiculous falsehood, and the Almighty was supposed to spend most of his time turning sticks into snakes, drowning boys for swimming on Sunday, and killing little children for the purpose of converting their parents. It found the earth filled with slaves and tyrants, the people in all countries downtrodden, half naked, half starved, without hope, and without reason in the world.
Such was the condition of man when the morning of science dawned upon his brain, and before he had heard the sublime declaration that the universe is governed by law.