Pablo Ruiz Picasso (1881-1973)
Spanish painter and sculptor, arguably most influential artist in first half of 20th century
Pioneered Cubism and made major contributions to Surrealism and Symbolism
Works can be separated into periods including the Blue Period, Rose Period, and Crystal Period
Notable works include Les Demoiselles d'Avignon, Guernica, Le Rêve, The Old Guitarist etc.