By that time the ideas were widespread in progressive social circles , one proponent being the novelist PERSON@1 whose circle of acquaintances included PERSON@2 , and the ideas of PERSON@3 were a significant influence on the inception of PERSON@4 's theory .

By that time the ideas were widespread in progressive social circles . One supporter was the novelist PERSON@1 whose circle of acquaintances included PERSON@2 . The ideas of PERSON@3 were a significant influence on the inception of PERSON@4 's theory .
