This third volume of letters in the Troeltsch CCE includes the renowned Heidelberg professor’s correspondence from 1905 to 1915. The letters focus on Troeltsch’s work on the Social Doctrine of Christian Churches and Groups (1912), the broadly-based network of liberal intellectuals before the First World War, the beginnings of war propaganda, and Troeltsch’s move to a professorship specifically established for him at the University of Berlin.