From Parley Tells How Columbus Discovered the Continent of America by Peter Parley

Christopher Columbus' first voyages were short ones, but after several years, desiring to see and learn more of distant countries, and thinking there were still new ones to be discovered, he went into the service of the King of Portugal and made many voyages to the western coast of Africa, and to the Canaries, and the Madeiras, and the Azores, islands lying off that coast, which were then the most westerly lands known to Europeans.

In his visits to these parts, one person informed him that his ship, sailing out farther to the west than usual, had picked up out of the sea a piece of wood curiously carved, and that very thick canes, like those which travellers had found in India, had been seen floating on the waves; also that great trees, torn up by the roots, had often been cast on shore, and once two dead bodies of men, with strange features, neither like Europeans nor Africans, were driven on the coast of the Azores.

All these stories set Columbus thinking and considering that these strange things had come drifting over the sea from the west, he looked upon them as tokens sent from some unknown countries lying far distant in that quarter: he was, therefore, eager to sail away and explore, but as he had not money enough himself to fit out ships and hire sailors, he determined to go and try to persuade some king or some state to be at the expense of the trial.

What inspires Columbus to want to explore?