All sorts of explanations have been deemed necessary to account for Columbus' great discovery at this time. To some it has seemed to be the result of a happy accident by which one of the deeply original spirits among mankind, with the _wanderlust_ in his soul, succeeded finally in having someone provide him with the opportunity for a long vague voyage on which fortunately the discovery of the Western Hemisphere was made. We hear much of happy accidents in scientific {xxvi} discoveries and they are supposed to represent the fortunate chances of humanity. It must not be forgotten, however, that only to genius do these happy accidents occur. Newton discovered the laws of gravitation after having seen the apple fall, but many billions of men had seen apples fall before his time without being led to the faintest hint of gravitation. Galvani touched the legs of a frog by accident with his metal implements while making electrical experiments, and so became "the frogs' dancing master" in the contemptuous phrase of many of his scientific colleagues and the father of biological electricity for us, but doubtless many others lacking his scientific insight had seen this phenomenon without having their attention particularly caught by it. It has been suggested that not a little of the good fortune that resulted in the discovery of the American Continent was due to Columbus' obstinacy of character. He was a man who, having conceived an idea, was bound to carry it out, cost what it might. These are, of course, the men as a rule who make advances and discoveries and obtain privileges for us. They are not satisfied to be as others, and the world usually denominates them cranks. They insist on doing things differently and their vision of great achievement does not fade or become dim even under the clouds of objections that men are prone to rouse against anything, and, above all, any purpose that they themselves cannot understand. Columbus is said to have been one of those mortals who are actually urged on by obstacles and who cannot be made to back down from their purpose by rebuffs and refusals, or even by the disappointments after preliminary encouragement which are so much harder to bear. Columbus' steadfastness of character during the voyage, which enabled him to overcome the murmurings of his men and keep his ships to their course in spite of almost mutiny, is a reflex of this trait of his character, and yet there have been no end of obstinate men who have never succeeded in accomplishing anything worth while. Once engaged on the expedition, or in the preliminaries for it, Columbus' obstinacy of character in the better sense of that expression was simply invaluable, but the question is. How did he become engaged on the expedition at this time? {xxvii}