It was in this same year (1474) that he had some correspondence with the Italian _savant_, Toscanelli, regarding the discovery of land westward. A belief in such discovery was a natural corollary of the object which Prince Henry had had in view,—by circumnavigating Africa to find a way to the countries of which Marco Polo had given golden accounts. It was to substitute for the tedious indirection of the African route a direct western passage,—a belief in the practicability of which was drawn from a confidence in the sphericity of the earth. Meanwhile, gathering what hope he could by reading the ancients, by conferring with wise men, and by questioning mariners returned from voyages which had borne them more or less westerly on the great ocean, Columbus suffered the thought to germinate as it would in his mind for several years. Even on the voyages which he made hither and thither for gain,—once far north, to Iceland even, or perhaps only to the Faröe Islands, as is inferred,—and in active participation in various warlike and marauding expeditions, like the attack on the Venetian galleys near Cape St. Vincent in 1485,[51] he constantly came in contact with those who could give him hints affecting his theory. Through all these years, however, we know not certainly what were the vicissitudes which fell to his lot.[52] It seems possible, if not probable, that Columbus went to Genoa and Venice, and in the first instance presented his scheme of western exploration to the authorities of those cities.[53] He may, on the other hand; have tried earlier to get the approval of the King of Portugal. In this case the visit to Italy may have occurred in the year following his departure from Portugal, which is nearly a blank in the record of his life. De Lorgues believes in the anterior Italian visit, when both Genoa and Venice rejected his plans; and then makes him live with his father at Savone, gaining a living by constructing charts, and by selling maps and books in Genoa. It would appear that in 1484 Columbus had urged his views upon the Portuguese King, but with no further success than to induce the sovereign to despatch, on other pretences, a vessel to undertake the passage westerly in secrecy. Its return without accomplishing any discovery opened the eyes of Columbus to the deceit which that monarch would have put upon him, and he departed from the Portuguese dominions in not a little disgust.[54]