أرنولد توينبي
Since the 1880s, there has been growing study of the major writers of this idealist tradition of thought in international relations, including Sir Alfred Zimmern, Norman Angell, John Maynard Keynes, John A. Hobson, Leonard Woolf, Gilbert Murray, Florence Stawell (known as Melian Stawell), Philip Henry Kerr, 11th Marquess of Lothian, Arnold J. Toynbee, Lester Pearson and David Davies.