We can readily believe the statements of Benvenuto Cellini, the sixteenth-century Goldsmith, that Francis I. "did not believe that any other man had come into the world who had attained so great a knowledge as Leonardo, and that not only as sculptor, painter, and architect, for beyond that he was a profound philosopher." It was Cellini also who contended that "Leonardo da Vinci, Michelangelo, and Raphael are the Book of the World."

Leonardo anticipated many eminent scientists and inventors in the methods of investigation which they adopted to solve the many problems with which their names are coupled. Among these may be cited Copernicus' theory of the earth's movement, Lamarck's classification of vertebrate and invertebrate animals, the laws of friction, the laws of combustion and respiration, the elevation of the continents, the laws of gravitation, the undulatory theory of light and heat, steam as a motive power in navigation, flying machines, the invention of the camera obscura, magnetic attraction, the use of the stone saw, the system of canalisation, breech loading cannon, the construction of fortifications, the circulation of the blood, the swimming belt, the wheelbarrow, the composition of explosives, the invention of paddle wheels, the smoke stack, the mincing machine! It is, therefore, easy to see why he called "Mechanics the Paradise of the Sciences."

Leonardo was a SUPERMAN.