After studying architecture, Roberto Antonio Sebastián Matta Echaurren moved to Paris in 1934, where he worked with Le Corbusier and met André Breton and Salvador Dalì. He began painting and joined the Surrealist movement, while maintaining a truly dreamlike style in his artistic language. His early Psychological Morphologies of 1938-1942 were a landmark in the development of the movement. Sebastian Matta traveled extensively, meeting Alvar Aalto in Scandinavia and Walter Gropius, Henry Moore, Laszlo Moholy-Nagy and René Magritte in London. Supported by André Breton, he takes part in the Exposition Internationale du Surréalisme in Paris. When war broke out, he fled to New York. There, he befriended Pollock, Gorky and Rothko, and became a real influence on these artists. By the 1950s, he was an international success, with works in museums in London, New York, Chicago, Rome, Venice, Paris and Washington.