Gustave Le Bon (French: [lə bɔ̃]; 7 May 1841 – 13 December 1931) was a French social psychologist, sociologist, anthropologist, inventor, and amateur physicist. He is best known for his 1895 work The Crowd: A Study of the Popular Mind. His writings incorporate theories of national traits, racial and male superiority, herd behavior and crowd psychology.Le Bon began his writing career working in the new field of anthropology.