Naum Gabo (1890-1977) was an important sculptor and art theorist. After receiving a scientific education in his native Russia, he attended Heinrich Wölfflin's art history lectures in Munich and resolved to become an artist. In 1920, in Moscow, Gabo and his brother, Antoine Pevsner, issued the famous Realistic Manifesto, outlining the principles of Constructivism, and Gabo held his first exhibition. Gabo was active in many avant-garde artistic movements in Europe between the world wars and emigrated to the United States after World War II. His sculptures are in major museum collections around the world.