Private Collection 10" x 14" Pablo Ruiz Picasso was a Spanish painter, sculptor, printmaker, ceramicist and theatre designer who spent most of his adult life in France. Regarded as one of the most influential artists of the 20th century, he is known for co-founding the Cubist movement, the invention of constructed sculpture, the co-invention of collage, and for the wide variety of styles that he helped develop and explore. Among his most famous works are the proto-Cubist Les Demoiselles d'Avignon, and Guernica, a dramatic portrayal of the bombing of Guernica by German and Italian airforces during the Spanish Civil War.Picasso was exceptionally prolific throughout his long lifetime. The total number of artworks he produced has been estimated at 50,000, comprising 1,885 paintings; 1,228 sculptures; 2,880 ceramics, roughly 12,000 drawings, many thousands of prints, and numerous tapestries and rugs. The medium in which Picasso made his most important contribution was painting. In his paintings, Picasso used colour as an expressive element, but relied on drawing rather than subtleties of colour to create form and space. He sometimes added sand to his paint to vary its texture. A nanoprobe of Picasso's The Red Armchair (1931) by physicists at Argonne National Laboratory in 2012 confirmed art historians' belief that Picasso used common house paint in many of his paintings. Much of his painting was done at night by artificial light.

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