"If any doubt could be harbored, not as to the right of Leonardo da Vinci to stand as the first name of the fifteenth century, which is beyond all doubt, but as to his originality in so many discoveries, which probably no one man, especially in such circumstances, has ever made, it must be by an hypothesis, not very untenable, that some parts of physical science had already attained a height which mere books do not record." This man, whom Vasari thinks "specially endowed by the hand of God himself," was born in 1452, at Castello da Vinci, a village in the Val d'Arno, near Florence. His father, Piero Antonio da Vinci, was a notary of the republic, a man of considerable property and influence. When he was twenty-five, he married the first of his four wives, Albiera di Giovanni Amadori, in 1452, and brought home his illegitimate son, Leonardo, born the same year, whom she tenderly cared for as her own. Of Leonardo's mother, Caterina, little is known, save that five years later she married, presumably in her own circle. Among the twelve other children who came into the home of the advocate, Leonardo was the especial pet and pride, probably because he seemed to have been given all the talents originally intended for the Da Vinci family. The handsome boy, whose "beauty of person," says Vasari, "was such that it has never been sufficiently extolled," and with "a grace beyond expression," cheerful, eager, enthusiastic, and warmhearted, when sent to school, learned everything with avidity. "In arithmetic he often confounded the master who taught him, by his reasonings and by the difficulty of the problems he proposed." He had that omnivorous appetite for books which Higginson calls the sure indication of genius. He loved nature intensely. He studied every flower and tree about the country home; made companions of the river Arno, the changing clouds, and the snow-capped mountains. Passionately fond of music, he not only learned to play on the guitar and lute, but invented a lyre of his own, on which he improvised both the song and the air. On the margins of his books he sketched such admirable drawings that his father took them to Andrea Verrochio, a famous Florentine artist, who was "amazed," and advised that the youth become a painter. Leonardo entered the studio of Verrochio when he was about eighteen, and at once became deeply absorbed in his work. He began to make models in clay, arranging on these soft drapery dipped in plaster, which he drew carefully in black and white on fine linen; also heads of smiling women and children out of terra cotta: already he had that divine gift of painting the "Da Vinci smile," which seems to have been born with him and to have died with him. He studied perspective, and with his fellow-students made chemical researches into the improvement of colors.