Leonardo Da Vinci is a biography by Maurice W. Brockwell. Da Vinci was an Italian polymath of the High Renaissance who was active as a painter, architect, engineer, scientist, theoretician, sculptor, and inventor. Excerpt: "Practically nothing is known about Leonardo's boyhood, but Vasari informs us that Ser Piero, impressed with the remarkable character of his son's genius, took some of his drawings to Andrea del Verrocchio, an intimate friend, and begged him earnestly to express an opinion on them. Verrocchio was so astonished at the power they revealed that he advised Ser Piero to send Leonardo to study under him. Leonardo thus entered the studio of Andrea del Verrocchio about 1469-1470. In the workshop of that great Florentine sculptor, goldsmith, and artist he met other craftsmen, metal workers, and youthful painters, among whom was Botticelli, at that moment of his development a jovial _habitué_ of the Poetical Supper Club, who had not yet given any premonitions of becoming the poet, mystic, and visionary of later times. There also Leonardo came into contact with that unoriginal painter Lorenzo di Credi, his junior by seven years. He also, no doubt, met Perugino, whom Michelangelo called "that blockhead in art." The genius and versatility of the Vincian painter was, however, in no way dulled by intercourse with lesser artists than himself; on the contrary he vied with each in turn, and readily outstripped his fellow pupils. In 1472, at the age of twenty, he was admitted into the Guild of Florentine Painters."