Book excerpt: First published in 1960, Theory and Design in the First Machine Age has become required reading in numerous courses on the history of modern architecture and is widely regarded as one of the definitive books on the modern movement. It has influenced a generation of students and critics interested in the formation of attitudes, themes, and forms which were characteristic of artists and architects working primarily in Europe between 1900 and 1930 under the compulsion of new technological developments in the first machine age.