Abel Rey (29 December 1873, Chalon-sur-Saône – 13 January 1940, Paris) was a French philosopher and historian of science. Abel Rey succeeded Gaston Milhaud as professor of the history of philosophy in its relation to science at the Sorbonne, and established the Institut d'histoire des sciences et des techniques to encourage cooperation between the sciences and humanities. It has been argued that Rey influenced Philipp Frank and the formation of the Vienna Circle. Rey's history of science was wide, including sciences from physics to sociology, and deep, ranging from antiquity to the present; moreover, it included the study of culture's influence on the sciences of the time.

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