Having laid a foundation in the before-mentioned sciences, he went to sea, and made several voyages both to the east and west[1]: But of these, and many other circumstances respecting his early years I have no perfect knowledge. I was so young at his death, that owing to filial respect, I had not the boldness to ask an account from him of the incidents of his youth, and besides I was not then interested in such inquiries. But some account of these things may be gleaned from his letters to their Catholic majesties, to whom he would not dare to write any thing but the truth. In one of these letters, written in the year 1501, he says, "Most Serene Princes! I went to sea when very young, and have continued to the present day; and this art of navigation inclines those who follow it to be desirous of discovering the secrets of this world. It is now forty years[2] that I have been sailing to all those parts of the world which are frequented at present; and I have conversed with many wise and learned men, both clergy and laity, Latins, Greeks, Indians and Moors, and of many other sects and nations. God has been favourable to my inclination, and has given me the spirit of understanding, so that I have become very skilful in navigation, with a competent knowledge in arithmetic, geometry, and astronomy, and both genius and skill to draw maps and charts of this world, with its cities, rivers, islands, and ports, all in their proper places and proportions. During my whole life, I have endeavoured to see and understand all books of cosmography, history, and philosophy; by which my understanding hath been enlightened so as to enable me to sail from Europe to the Indies, and God hath inclined me to put this design into execution. Filled with this desire I came to your highnesses; and after all who had heard an account of my proposed undertaking had rejected it with scorn and contempt as visionary and impracticable; in your highnesses alone I found judgment to believe in the practicability of my proposal, and constancy and spirit to put it into execution."