1798-1857. French philosopher, regarded as the founder of sociology, a term he coined 1830. He sought to establish sociology as an intellectual discipline, using a scientific approach (`positivism') as the basis of a new science of social order and social development. Comte, born in Montpellier, was expelled from the Paris Ecole Polytechnique for leading a student revolt in 1816. In 1818 he became secretary to the socialist Saint-Simon and was much influenced by him. He began lecturing on the `Positive Philosophy' in 1826, but almost immediately succumbed to a nervous disorder and once tried to commit suicide in the Seine. On his recovery he resumed his lectures and mathematical teaching. In his six-volume Cours de philosophie positive 1830-42 he argued that human thought and social development evolve through three stages: the theological, the metaphysical, and the positive or scientific. Although he originally sought to proclaim society's evolution to a new golden age of science, industry, and rational morality, his radical ideas were increasingly tempered by the political and social upheavals of his time. His influence, however, continued in Europe and the US until the early 20th century.