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Apprenticeships, 1488–1492

As a young boy, Michelangelo was sent to Florence to study grammar under the Humanist Francesco da Urbino. He showed no interest in his schooling, preferring to copy paintings from churches and seek the company of other painters.

The city of Florence was at that time Italy's greatest centre of the arts and learning. Art was sponsored by the Signoria (the town council), the merchant guilds, and wealthy patrons such as the Medici and their banking associates. The Renaissance, a renewal of Classical scholarship and the arts, had its first flowering in Florence. In the early 15th century, the architect Filippo Brunelleschi, having studied the remains of Classical buildings in Rome, had created two churches, San Lorenzo's and Santo Spirito, which embodied the Classical precepts. The sculptor Lorenzo Ghiberti had laboured for fifty years to create the north and east bronze doors of the Baptistry, which Michelangelo was to describe as "The Gates of Paradise". The exterior niches of the Church of Orsanmichele contained a gallery of works by the most acclaimed sculptors of Florence: Donatello, Ghiberti, Andrea del Verrocchio, and Nanni di Banco. The interiors of the older churches were covered with frescos (mostly in Late Medieval, but also in the Early Renaissance style), begun by Giotto and continued by Masaccio in the Brancacci Chapel, both of whose works Michelangelo studied and copied in drawings.

During Michelangelo's childhood, a team of painters had been called from Florence to the Vatican to decorate the walls of the Sistine Chapel. Among them was Domenico Ghirlandaio, a master in fresco painting, perspective, figure drawing and portraiture who had the largest workshop in Florence. In 1488, at age 13, Michelangelo was apprenticed to Ghirlandaio. The next year, his father persuaded Ghirlandaio to pay Michelangelo as an artist, which was rare for someone of fourteen. When in 1489, Lorenzo de' Medici, de facto ruler of Florence, asked Ghirlandaio for his two best pupils, Ghirlandaio sent Michelangelo and Francesco Granacci.

From 1490 to 1492, Michelangelo attended the Platonic Academy, a Humanist academy founded by the Medici. There, his work and outlook were influenced by many of the most prominent philosophers and writers of the day, including Marsilio Ficino, Pico della Mirandola and Poliziano. At this time, Michelangelo sculpted the reliefs Madonna of the Stairs (1490–1492) and Battle of the Centaurs (1491–1492), the latter based on a theme suggested by Poliziano and commissioned by Lorenzo de' Medici. Michelangelo worked for a time with the sculptor Bertoldo di Giovanni. When he was seventeen, another pupil, Pietro Torrigiano, struck him on the nose, causing the disfigurement that is conspicuous in the portraits of Michelangelo.