Carl Einstein, born Karl Einstein, also known by pseudonym Savine Ree Urian (26 April 1885 – 5 July 1940), was an influential German Jewish writer, art historian, anarchist, and critic. Regarded as one of the first critics to appreciate the development of Cubism, as well as for his work on African art and influence on the European avant-garde, Einstein was a friend and colleague of such figures as George Grosz, Georges Braque, Pablo Picasso and Daniel-Henry Kahnweiler. His work combined many strands of both political and aesthetic discourse into his writings, addressing both the developing aesthetic of modern art and the political situation in Europe.