Gustave LeBon (1841-1931) was a French physician who wrote widely on scientific subjects, including anatomy and physiology, anthropology, and history. Many of his writings focused in particular on national traits, crowd behavior, and racial superiority. His numerous books include The Civilization of Arabs, The Psychology of Peoples, and The Crowd.
Robert Nye is George Lynn Cross Research Professor in the department of history at the University of Oklahoma. He is the author of Crime, Madness and Politics in Modern France: The Medical Concept of National Decline and The Origins of Crowd Psychology: Gustave Le Bon and the Crisis of Mass Democracy in the Third Republic.