Swiss architectural historian, critic, teacher and writer. He received his doctorate in art history in 1922, having studied under Heinrich Wölfflin. He was one of the founders of CIAM (the Congrès Internationaux d’Architecture Moderne) and served as its secretary general for many years. His book “Space, Time and Architecture,” which originated in the Charles Eliot Norton Lectures given at Harvard University during the winter of 1938-39, was published in 1941, and became one of the most influential 20th century interpretations of modernism. Giedion provided Breuer with some of his earliest important commissions, including the Dolderthal Apartments, designed with Alfred and Emil Roth, and the Wohnbedarf stores in Zürich and Basel. With Rudolf Graber and Werner Moser, Giedion founded Wohnbedarf to promote modern furniture and design, including Breuer’s tubular steel chairs.