Architecture arouses sentiments in man. The architect's task therefore, is to make those sentiments more precise.

Louis and did odd jobs in New York.  
Gravagnuolo Benedetto (1995).  204.

In this and many other essays he contributed to the elaboration of a body of theory and criticism of Modernism in architecture. He was influential in European Modern architecture and in his essay Ornament and Crime he abandoned the aesthetic principles of the Vienna Secession.