Gustave Le Bon

Born in Nogent-le-Rotrou, France, in 1841, Gustave Le Bon trained in medicine in Paris before turning more and more toward writing and research. Over the course of a long career, he worked across psychology, sociology, anthropology, and history, building a reputation as a restless and wide-ranging thinker.

He is remembered above all for The Crowd: A Study of the Popular Mind (1895), a book that examined how people behave differently in groups than they do alone. Whether readers see his ideas as insightful, troubling, or both, his work became highly influential in debates about politics, persuasion, mass movements, and the power of public opinion.

Le Bon continued publishing well into the 20th century and died in 1931. Today he remains a notable and controversial figure: an author whose theories helped define early crowd psychology and whose books still appear in conversations about leadership, propaganda, and collective behavior.