If, next year, we were to learn that some miraculous Ericsson or Edison had established a practicable route to the planet Mars, and that this neighbor of ours in the solar system was found to be replete with all the things that we most want and can least easily get,--were such news to reach us, we might comprehend the sensation created in the Europe of 1492, four centuries ago, when it received the information that a certain Christopher Columbus had discovered a brand new continent, overflowing with gold and jewels, on the other side of the Atlantic. The impossible had happened. Our globe was not the petty sphere that it had been assumed to be. There was room in it for everybody, and a fortune for the picking up. And all the world, with Spain in the van, prepared to move on El Dorado. A whiff of the fresh Western air blew in all nostrils, and re-animated the moribund body of civilization. The stimulus of Columbus' achievement was felt in every condition of human life and phase of human activity. Mankind once more saw a future, and bound up its loins to take advantage of it. Literature felt the electric touch, and blossomed in the unmatched geniuses of the Elizabethan age. Science ceased to reason _a priori_, and began to investigate and classify facts. Human liberty began to be conscious of thews and sinews, soon to be tested in the struggle of the Netherlands against Philip II. of Spain, and, later, in that of the people of England against their own Charles Stuart. Religion was heard to mutter something about the rights of private conscience, and anon the muttering took form in the heroic protest of the man of Eisleben. It was like the awakening in the palace of the Sleeping Beauty, in the fairy-tale. Columbus had kissed the lips of the Princess America, and at once the long-pent stream of old-world life dashed onward like a cataract. A new world! Four hundred years have passed, and the New World is less a novelty than it was. We have begun to suspect that no given number of square miles of land, no eloquence and sagacity of paper preambles and declarations, no swiftness of travel nor instantaneousness of communication, no invincibility of ironclads nor refinement of society, no logic in religion, no gospel of political economy,--none of these and a hundred other things will read us the Riddle of the Sphinx. _Non tali auxilio, nec defensoribus istis!_ The elements of true life lie deeper and are simpler. Once more, it seems, we have reached the limits of a dispensation, and are halted by a blank wall. There is no visible way over it, nor around it. We cannot stand still; still less can we turn back. What is to happen? What happens when an irresistible force encounters an impenetrable barrier?