Western painting the feelings of emotional liberation and hedonism. Pablo Picasso made his first cubist paintings based on Cézanne's idea that all depiction of nature can be reduced to three solids: cube, sphere and cone. With the painting "Les Demoiselles d'Avignon" (1907), Picasso created a new and radical picture depicting a brothel scene with five prostitutes, violently painted women, reminiscent of African tribal masks and his own Cubist inventions. Cubism was jointly developed from about 1908 through 1912 by Pablo Picasso and Georges Braque, whose "Violin and Candlestick, Paris" (1910) is shown here. The first clear manifestation of Cubism was practised by
Pablo Picasso exposure to French painting. The generally upbeat and optimistic mood of paintings in this period is reminiscent of the 1899–1901 period (i.e. just prior to the Blue Period) and 1904 can be considered a transition year between the two periods. By 1905, Picasso became a favourite of American art collectors Leo and Gertrude Stein. Their older brother Michael Stein and his wife Sarah also became collectors of his work. Picasso painted portraits of both Gertrude Stein and her nephew Allan Stein. Gertrude Stein became Picasso's principal patron, acquiring his drawings and paintings and exhibiting them in her informal "Salon" at