Consideration of two pieces in the exhibition and the way in which Judd combined materials within his work.05.02.2004 One of the most significant American artists of the post-war period, Donald Judd changed the course of modern sculpture. This exhibition is the first substantial retrospective of his work in three-dimensions since 1988, and the first to trace his career up to his death in 1994.Working in New York in the 1960s, Judd became known as one of the key exponents of ‘Minimalism’, but it was a label that he strongly rejected. Although he shared many of the principles identified with Minimalist art — the use of industrial materials to create abstract works that emphasise the purity of colour, form, space and materials — he preferred to describe his own work as ‘the simple expression of complex thought’.