W. Creighton Peden 
From Authority Religion to Spirit Religion [PDF ebook] 
An Intellectual Biography of George Burman Foster, 1857-1918

George Burman Foster (1857-1918) was a key figure among the philosophers and theologians who composed the early "Chicago School." This volume makes available the development of Foster’s religious thought by exploring his major writings as well as diverse shorter works. Conclusions are provided following each major section of the book. Through this approach we discover that Foster was laying the foundation for the emergence of American humanism.