After having dominated philosophical thought in Britain and the United States during the end of the nineteenth century, idealism was in steady decline by the outbreak of World War I. Its ideas and ideals seemed unsuited to face the transition from Victorianism to modernism and the rapid social changes of the post-war era. Its Anglo-American proponents—who were often liberals—were accused of indirectly promoting Prussian militarism and authoritarianism because of idealism’s German background. Idealism was also charged with being ill-attuned to the development of the natural sciences, and was replaced by the narrower and more scientific ideal of analytical philosophy. While idealists had been preoccupied with religion, history, aesthetics, an...