Swedish painter, sculptor, printmaker, and writer on art. He was born at Ludvika, Kopparberg, and studied in Copenhagen and Stockholm. In the 1950s he became recognized as one of his country's leading exponents of Expressionism on account of his vigorous paintings, with their harshly contrasting colours, and his writings in Swedish art journals, in which he opposed geometrical abstraction. Landscapes expressing the desolate grandeur of the Lafoten Islands were among his characteristic works of this time. In the mid-1960s he began to make sculpture, working with metal and wood in a deliberately crude style that sometimes verged on abstraction. He was also active as a printmaker and it was in this field that he often showed his social commitment, as in his series of etchings Insurrection, inspired by the Hungarian uprising of 1956. In 1964 he represented Sweden at the Venice Biennale and he had a major retrospective at the Moderna Museet, Stockholm, in 1974. He carried out several large public commissions in Sweden, for example the sculpture Scarecrow (1971, City Library, Gothenburg).