A discussion of the psychology of revolution in general, religious or political, and the mental and emotional characteristics of the leaders of such movements, with special consideration of the French revolution. The examples of revolutionary movements are preferably chosen from French history, but universal history is also drawn upon, including the political upheavals in Portugal, China, and Turkey. The present age is not merely an epoch of discovery; it is also a period of revision of the various elements of knowledge. Having recognised that there are no phenomena of which the first cause is still accessible, science has resumed the examination of her ancient certitudes, and has proved their fragility. To-day she sees her ancient principles vanishing one by one. Mechanics is losing its axioms, and matter, formerly the eternal substratum of the worlds, becomes a simple aggregate of ephemeral forces in transitory condensation. Despite its conjectural side, by virtue of which it to some extent escapes the severest form of criticism, history has not been free from this universal revision. There is no longer a single one of its phases of which we can say that it is certainly known. What appeared to be definitely acquired is now once more put in question. Among the events whose study seemed completed was the French Revolution. Analysed by several generations of writers, one might suppose it to be perfectly elucidated. What new thing can be said of it, except in modification of some of its details?

Author Biography

Charles-Marie Gustave Le Bon (F 7 May 1841 - 13 December 1931) was a leading French polymath whose areas of interest included anthropology, psychology, sociology, medicine, invention, and physics.[1][2][3] He is best known for his 1895 work The Crowd: A Study of the Popular Mind, which is considered one of the seminal works of crowd psychology.[4][5] A native of Nogent-le-Rotrou, Le Bon qualified as a doctor of medicine at the University of Paris in 1866. He opted against the formal practice of medicine as a physician, instead beginning his writing career the same year of his graduation. He published a number of medical articles and books before joining the French Army after the outbreak of the Franco-Prussian War. Defeat in the war coupled with being a first-hand witness to the Paris Commune of 1871 strongly shaped Le Bon's worldview. He then travelled widely, touring Europe, Asia and North Africa. He analysed the peoples and the civilisations he encountered under the umbrella of the nascent field of anthropology, developing an essentialist view of humanity, and invented a portable cephalometer during his travels. In the 1890s, he turned to psychology and sociology, in which fields he released his most successful works. Le Bon developed the view that crowds are not the sum of their individual parts, proposing that within crowds there forms a new psychological entity, the characteristics of which are determined by the racial unconscious of the crowd. At the same time he created his psychological and sociological theories, he performed experiments in physics and published popular books on the subject, anticipating the mass-energy equivalence and prophesising the Atomic Age. Le Bon maintained his eclectic interests up until his death in 1931. Ignored or maligned by sections of the French academic and scientific establishment during his life due to his politically conservative and reactionary views, Le Bon was critical of democracy and socialism. Le Bon's works were influential to such disparate figures as Theodore Roosevelt and Benito Mussolini, Sigmund Freud and Jose Ortega y Gasset, Adolf Hitler and Vladimir Lenin.