He had two styles, the one abounded in shadow, which gives admirable brilliancy to the contrasting lights; the other was more quiet, and managed by means of middle tints. In each style, the grace of his design, the expression of the mental affections, and the delicacy of his pencil, are unrivalled. Every thing is lively in his paintings, the foreground, the landscape, the adventitious ornaments of necklaces, flowers, and architecture; but this gaiety is more apparent in the heads. In these he purposely repeats the same idea, and gives them a smile which delights the mind of a spectator. He did not, however, consider his pictures as complete, but from a singular timidity,[132] often left them imperfect, as I shall more fully state under the Milanese school. There he will appear with the dignity of a consummate master, and a portion of his fame must at present suffice for his native school. The life of Lionardo may be divided into four periods, the first of which includes the time he remained at Florence, while still a young man. To this era may be referred, not only the Medusa of the royal gallery, and the few pieces mentioned by Vasari; but some others also, less powerful in the shadows, and less diversified in the folds of the drapery, and which present some heads more delicate than select, and apparently derived from the school of Verrocchio. Such is the Magdalen of the Pitti palace at Florence, and that of the Aldobrandini palace at Rome; some Madonnas and Holy Families which are in several collections, as in the Giustiniani and Borghese galleries; and some heads of the Redeemer and of the Baptist, which are to be seen in various places; although it is often reasonable to suspend our judgment in regard to the genuineness of such pieces, on account of the great number of Lionardo's imitators. The child, laid in a bed richly ornamented, enveloped in its clothes, and adorned with a necklace, which is in the house of his excellency the Gonfaloniere of Bologna, is of a different class, and of undoubted originality. After this first period, Lionardo was brought to Milan by Lodovico Sforza, "whom he highly gratified by his performance on the lyre; a curious and new instrument, almost entirely of silver," which Lionardo carried with him, and had constructed with his own hands. All the musicians there assembled were vanquished, and the whole city being struck with admiration of his extemporaneous poetry, and his eloquence, he was retained by the prince, and remained there till 1499, engaged in abstruse studies, and in mechanical and hydrostatical labours for the service of the state. During this time he painted little, except the celebrated Last Supper; but by superintending an academy of the fine arts, he left a degree of refinement in Milan, which was so productive of illustrious pupils, that this period may be reckoned the most glorious era of his life.