The Psychology of Revolution by Gustave Le Bon is a pioneering work that delves deeply into the psychological forces driving revolutionary movements throughout history. Le Bon, a foremost social psychologist, explores how collective mentalities, crowd behavior, and individual psychologies converge to fuel political and social upheaval. Divided into several parts and books, the work examines scientific, political, and religious revolutions, the roles governments play, and the complex interplay between individuals and masses. A substantial focus is placed on the French Revolution, analyzing the psychological makeup of its key assemblies, leaders, and violent episodes. Le Bon also investigates the tension between deep-rooted traditions and revolutionary ideals, tracing the political consequences and ongoing evolution of democratic beliefs. This insightful study offers an essential framework for understanding how emotions, irrationality, and group dynamics influence revolutionary change, making it a classic in political psychology and social theory.