Pablo Ruiz Picasso (October 25, 1881 – April 8, 1973) was a Spanish painter, draughtsman, and sculptor. As one of the most recognized figures in twentieth-century art, he is best known for co-founding the Cubist movement and for the wide variety of styles embodied in his work. Among his most famous works are the proto-Cubist Les Demoiselles d'Avignon (1907) and his depiction of the German bombing of Guernica during the Spanish Civil War, Guernica (1937). Picasso’s work is often categorized into periods. While the names of many of his later periods are debated, the most commonly accepted periods in his work are the Blue Period (1901–1904), the Rose Period (1905–1907), the African-influenced Period (1908–1909), Analytic Cubism (1909–1912), and Synthetic Cubism (1912–1919). In 1939–40 the Museum of Modern Art in New York City, under its director Alfred Barr, a Picasso enthusiast, held a major and highly successful retrospective of his principal works up until that time. This exhibition lionized the artist, brought into full public view in America the scope of his artistry, and resulted in a reinterpretation of his work by contemporary art historians and scholars. (www.wikipedia.org)