For Hugo Häring, the role of geometry was one of the central issues in architecture. For him, geometric ordering systems were a deadening force. He rejected Le Corbusier's view that ‘geometry is the daughter of the universe’ and doubted the aesthetic efficacy of proportional systems. He believed that there was no absolute: geometry had different meanings at different times and places and was often present for purely technical reasons. This essay on proportion was written shortly after the Nazis came to power and Häring lost all his work. It was then that he turned to writing, both as a means of legitimating his Modernism as not un-German and, as in the case of this essay, of setting out his developing theories. Peter Blundell Jones' introduction gives the background to this, the first translation of this important work to be published in English.