Michelangelo
Michelangelo returned to Florence in 1499. The republic was changing after the fall of its leader, anti-Renaissance priest Girolamo Savonarola, who was executed in 1498, and the rise of the "gonfaloniere" Piero Soderini. Michelangelo was asked by the consuls of the Guild of Wool to complete an unfinished project begun 40 years earlier by Agostino di Duccio: a colossal statue of Carrara marble portraying David as a symbol of Florentine freedom to be placed on the gable of Florence Cathedral. Michelangelo responded by completing his most famous work, the statue of David, in 1504. The masterwork definitively established his prominence as a sculptor of extraordinary technical skill and strength of symbolic imagination. A team of consultants, including Botticelli and Leonardo da Vinci, was called together to decide upon its placement, ultimately the Piazza della Signoria, in front of the Palazzo Vecchio. It now stands in the Academia while a replica occupies its place in the square.
Battle of the Centaurs (Michelangelo)
Michelangelo, at 17, was working under the patronage of Lorenzo de' Medici when he crafted the "Battle of the Centaurs", although the work was not commissioned but created for himself. The work reflected a then current fashion for reproducing ancient themes. Specifically, Michelangelo was inspired by a relief that had been produced for de' Medici by Bertoldo di Giovanni, a work in bronze that hung in the Medici palace. Michelangelo chose to work in marble rather than the more expensive bronze to keep down costs. Bertoldo's work, The "Equestrian Battle in the Ancient Manner"—also known as "Battle (with Hercules)"—was a recreation of a damaged Roman battle sarcophagus and required liberal imagination to fill in the gaps left by the damaged original. Bertoldo took other liberties with his source material and seems to have himself been inspired by the Antonio del Pollaiolo engraving "Battle of the Nudes".