But there was a third reason for Henry’s enterprise. The research work, the education of his seamen, the making of maps, the providing of instruments, the building and fitting out of ships and so forth could not possibly go on without some sort of financial basis. Such a project, however philanthropic, could not be allowed to continue without some means of sustenance. Henry’s idea was to make the overseas trade pay for all of this. There were riches enough in India and elsewhere to cover handsomely the cost of making Portugal a race of sailors, the leader of the world in maritime exploration. The land route across Asia along which were brought such rich commodities of eastern goods alone proved that India was worth aiming at. If only these goods could be brought by water, then not only would delay, pillage, and money be saved, but Portugal would become the owners of the Indian carrying trade, and the richest of the eastern merchants. One cannot emphasise too strongly the fact that in the minds of the people of the Middle Ages India was the prize of the world, the depository of the greatest wealth. India, then, was the inspiration, Sagres the medium by which the countries of the globe outside Europe have been discovered and developed. And there was another reason. The political power of the Catholic Church was very considerable. A Portuguese seaman was a true son of the Church, whether skipper or deck-hand. Wherever he colonised, wherever he discovered or traded, he was anxious to spread the Catholic religion. He hated Islam, he wanted to add the territory of the world to the great Christian empire. In no heart did such aspirations flourish so strongly as in Prince Henry the Navigator. India was to become not merely the means of encouraging seafaring, but an invaluable possession.