Talcott Parsons
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Talcott Parsons (December 13, 1902 – May 8, 1979) was an American sociologist who served on the faculty of Harvard University from 1927 to 1973.
Parsons developed a general theory for the study of society called action theory, based on the methodological principle of voluntarism and the epistemological principle of analytical realism. More than a theory of society, Parsons presented a theory of social evolution and a concrete interpretation of the "drives" and directions of world history.