This poor wool-carder had four children, one of whom (born about 1436) he named Christopher. Almost everybody who has been at school in the world knows the name of this little Italian boy, for he became one of the most famous of men. Many a boy in our times has to help his father in his shop. The great Benjamin Franklin began work by pouring melted tallow into moulds to make candles. In the same way little Columbus had to comb wool for his father, and very likely he got as tired of wool as Franklin did of candles. The city he lived in was full of sailors, and no doubt he talked to many of them about life on the wild waters, and heard so many stories of danger and adventure that he took the fancy to go to sea himself. At any rate we are told that he became a sailor when only fourteen years old, and made long and daring voyages while he was still young. Some of those were in Portuguese ships down the coast of Africa, of which continent very little was known at that time. He went north, too; some think as far as Iceland. Who knows but that he was told there of what the Northmen had done? Columbus spent some time in the island of Madeira, far out in the Atlantic ocean, and there the people told him of strange things they had seen. These had come over the seas before the west winds and floated on their island shores. Among them were pieces of carved wood, and canes so long that they would hold four quarts of wine between their joints. And the dead bodies of two men had also come ashore, whose skins were the color of bronze or copper. These stories set Columbus thinking. He was now a man, and had read many books of travel, and had studied all that was then known of geography. For a time he lived by making maps and charts for ship captains. This was in the city of Lisbon, in Portugal, where he married and settled down and had little boys of his own. At that time some of the most learned people had odd notions about the earth. You may have seen globes as round as an orange, with the countries laid out on them. But the people then had never seen such a globe, and the most of them thought that the earth was as flat as a table, and that any one who sailed too far over the ocean would come to the edge of the earth and fall off. This seems very absurd, does it not? But you must remember that people then knew very little about the earth they lived on, and could not understand how people could keep on a round globe like flies on a ball of glass. But there were some who thought the earth to be round, and Columbus was one of these. At that time silk and spices and other rich goods were brought from China and India, thousands of miles to the east, by caravans that traveled overland. Columbus thought that by sailing west, over the broad Atlantic, he would come to these far countries, just as a fly may walk around the surface of an orange, and come to the place it started from.