As a speculative philosopher, he had arrived at a correct conclusion respecting the sphericity of the earth, and, with all the generosity of a humanitarian, he freely communicated his ideas to others. Columbus would have excluded every other human being from participating in his thoughts, and arrogated to himself alone the right to navigate westerly. This was the difference between the broad-minded philosopher and the narrow-minded sailor who by accident had stumbled upon a theory. The philosopher said, "It belongs to the world!" The ignorant sailor cried, "It is mine!"
Toscanelli advanced the theory, but it was Columbus who put it to the test, and reaped all the rewards, as well as suffered for the mistakes. For mistakes there were, and the chief error lay in supposing the country "discovered" by Columbus pertained to the Indies. He died in that belief, and also Toscanelli, who passed away ten years before the first voyage made to that land, subsequently known as America. In one sense, perhaps, the Florentine doctor was the means of that first voyage of Columbus having been accomplished, for the chart he sent him made the distance between Europe and the western country seem so short that it was undertaken with less reluctance, and persisted in more stubbornly, than it might otherwise have been. But this was a mistake in detail only, and not in theory. A line was projected from about the latitude of Lisbon, on the western coast of Europe, to the "great city of Quinsai," as described by Marco Polo, on the opposite shores of Asia. This line was divided into twenty-six spaces, of two hundred and fifty miles each, making the total distance between the two points sixty-five hundred miles, which Toscanelli supposed to be one-third of the earth's circumference.
[Illustration: A CONJECTURAL RESTORATION OF TOSCANELLI'S MAP]
In short, Toscanelli calculated the distance, made a conjectural chart embodying the results of his readings of Aristotle, Strabo, and Ptolemy, of his conversations during many years with Oriental travellers, and his own observations. He sent this chart to Columbus; the latter adopted it as his guide, and by means of it, faulty as it was, achieved his great "discovery." Whose, then, is the merit of this achievement? Does it not belong as much to Toscanelli as to Columbus?