Pablo Picasso was a highly influential Spanish painter and sculptor. He helped pioneer the Cubist movement in the early 20th century by breaking subjects down into geometric forms and reassembling them in abstracted compositions. Some of his most famous works include Les Demoiselles d'Avignon and Guernica. Picasso is also known for his quote "Every child is an artist. The problem is how to remain an artist once he grows up." The document provides biographical details on Picasso and discusses how Cubism analyzes and reassembles subject matter in abstracted forms.