Sir James Cochran Stevenson Runciman, known as Steven Runciman, was an English historian best known for his three-volume A History of the Crusades (1951–1954). His works had a profound impact on the popular conception of the Crusades within the Western world, although Runciman considered himself "not a historian, but a writer of literature", and British historian Christopher Tyerman considers Runciman's History to be the "last chronicle of the crusades". Runciman summarized the Crusades as "nothing more than a long act of intolerance in the name of God, which is a sin against the Holy Ghost."