Gilbert (Gilbert Prousch, San Martin de Tor, Italy, 1943) and George (George Passmore, Plymouth, GB, 1942) began working collectively in 1967. Although they use different artistic media, and are especially known as photographers, they refer to all their works as sculpture. At the base of their work is performative action. They are the protagonists of all their images and projects, such as The Singing and Living Sculptures, or the extensive series of large-scale photographs called The Pictures. The central theme of Gilbert and George's work is the human condition, and their motto, "art for all," describes the anti-elitist approach to art that they pursue. One of their most well-known artist books is "Dark Shadows, The Sculptors Gilbert and George" from 1974, in the collection.