In the late 19th century, another famous American architect — Franck Lloyd Wright, who was an employee of Sullivan’s studio, inherited Sullivan’s idea about relationship between form and function. Wright thinks that architecture should be loyal to not only structure and purpose of itself, but also time, site, and the environment. Based on the idea of organic architecture, combining his practice in “Prairie Style,” Wright had further developed Sullivan’s idea forward it to a more throughout theory of “organic architecture.” In the article “ In the Cause of Architecture” in 1908, Wright wrote, “A sense of the organic is indispensable to an architect; where can he develop it so surely as in this school? A knowledge of the relations of form and…