Donald Judd (1928–1994) is one of the most significant American artists of the post-war period. Judd described his work as “the simple expression of complex thought.” Often classified as a minimalist—a term that he strongly rejected—his explorations of volume, interval, “actual space,” and color had a profound impact on the course of modern sculpture. Judd also paid particular attention to the selection and fabrication of materials, working with industrial materials such as Plexiglass, metal and plywood. The relationship between object, viewer, and environment was a central part of his practice. During his lifetime, Judd received grants and awards from the John Guggenheim Memorial Foundation, National Endowment for the Arts, the Sikkens Foundation, and the Swedish Institute, among many others. Judd’s work is in the collection of nearly every major public art institution in the U.S.