If this love for colour and line happened to be combined with an interest in mechanics and hydraulics, the result was a Leonardo da Vinci, who painted his pictures, experimented with his balloons and flying machines, drained the marshes of the Lombardian plains and “expressed” his joy and interest in all things between Heaven and Earth in prose, in painting, in sculpture and in curiously conceived engines. When a man of gigantic strength, like Michael Angelo, found the brush and the palette too soft for his strong hands, he turned to sculpture and to architecture, and hacked the most terrific creatures out of heavy blocks of marble and drew the plans for the church of St. Peter, the most concrete “expression” of the glories of the triumphant church. And so it went. All Italy (and very soon all of Europe) was filled with men and women who lived that they might add their mite to the sum total of our accumulated treasures of knowledge and beauty and wisdom. In Germany, in the city of Mainz, Johann zum Gänsefleisch, commonly known as Johann Gutenberg, had just invented a new method of copying books. He had studied the old woodcuts and had perfected a system by which individual letters of soft lead could be placed in such a way that they formed words and whole pages. It is true, he soon lost all his money in a law-suit which had to do with the original invention of the press. He died in poverty, but the “expression” of his particular inventive genius lived after him. Soon Aldus in Venice and Etienne in Paris and Plantin in Antwerp and Froben in Basel were flooding the world with carefully edited editions of the classics printed in the Gothic letters of the Gutenberg Bible, or printed in the Italian type which we use in this book, or printed in Greek letters, or in Hebrew. Then the whole world became the eager audience of those who had something to say. The day when learning had been a monopoly of a privileged few came to an end. And the last excuse for ignorance was removed from this world, when Elzevier of Haarlem began to print his cheap and popular editions. Then Aristotle and Plato, Virgil and Horace and Pliny, all the goodly company of the ancient authors and philosophers and scientists, offered to become man’s faithful friend in exchange for a few paltry pennies. Humanism had made all men free and equal before the printed word. THE GREAT DISCOVERIES BUT NOW THAT PEOPLE HAD BROKEN THROUGH THE BONDS OF THEIR NARROW MEDIÆVAL LIMITATIONS, THEY HAD TO HAVE MORE ROOM FOR THEIR WANDERINGS. THE EUROPEAN WORLD HAD GROWN TOO SMALL FOR THEIR AMBITIONS. IT WAS THE TIME OF THE GREAT VOYAGES OF DISCOVERY