Cubism the 1950s and 1960s, especially by Clement Greenberg. Contemporary views of Cubism are complex, formed to some extent in response to the "Salle 41" Cubists, whose methods were too distinct from those of Picasso and Braque to be considered merely secondary to them. Alternative interpretations of Cubism have therefore developed. Wider views of Cubism include artists who were later associated with the "Salle 41" artists, e.g., Francis Picabia; the brothers Jacques Villon, Raymond Duchamp-Villon and Marcel Duchamp, who beginning in late 1911 formed the core of the Section d'Or (or the Puteaux Group); the sculptors Alexander Archipenko, Joseph Csaky and
Robert Paul (painter) 1979; his works can be found in the National Gallery of Zimbabwe. Robert Paul (painter) Robert Paul (1906–1979) was a Rhodesian abstract painter. Paul joined the Rhodesian police force, the British South Africa Police, in 1927, and during patrols in his early years became enamored of the local landscape. Self-taught as an artist, he would often bring his sketchbook along on his trips, recording the passing countryside. He was encouraged to paint by John Piper and Ivon Hitchens, who introduced him to the work of Georges Braque and other painters. Paul retired from the force in 1951 to paint full-time.