Arnold Joseph Toynbee (; 14 April 1889 – 22 October 1975) was an English historian, a philosopher of history, an author of numerous books and a research professor of international history at the London School of Economics and King's College London. From 1918 to 1950, Toynbee was considered a leading specialist on international affairs; from 1924 to 1954 he was the Director of Studies at Chatham House, in which position he also produced 34 volumes of the Survey of International Affairs, a "bible" for international specialists in Britain.He is best known for his 12-volume A Study of History (1934–1961). With his prodigious output of papers, articles, speeches and presentations, and numerous books translated into many languages, Toynbee was a widely read and discussed scholar in the 1940s and 1950s. Source: Wikipedia (en)