Mona Lisa two years, Peruggia grew impatient and was caught when he attempted to sell it to directors of the Uffizi Gallery in Florence. It was exhibited in the Uffizi Gallery for over two weeks and returned to the Louvre on 4 January 1914. Peruggia served six months in prison for the crime and was hailed for his patriotism in Italy. Before its theft, the "Mona Lisa" was not widely known outside the art world. It was not until the 1860s that some critics, a thin slice of the French intelligentsia, began to hail it as a masterwork of Renaissance painting. In
Paris in the 18th century Robert; Pierre-Paul Prud'hon, whose work combined classicism and romanticism; and a major neoclassical sculptor from the earlier generation, the sculptor Jean-Antoine Houdon, famous for his busts of George Washington and Voltaire. The idea of making the Louvre into an art museum had first been proposed in 1747 by Lafont de Saint-Yenne and supported by Diderot in 1765 in the article on the Louvre in the "Encylopedie". The idea was accepted by Louis XVI, who in 1789 began work on the Grand Gallery of the Louvre. The Revolution intervened, and on 27 July 1793 the Convention decreed the creation of a