Reinhart Koselleck (23 April 1923 – 3 February 2006) was a German historian. He is widely considered to be one of the most important historians of the 20th century. He occupied a distinctive position within history, working outside of any pre-established 'school', while making pioneering contributions to conceptual history (Begriffsgeschichte), the epistemology of history, linguistics, the foundations of anthropology of history and social history, and the history of law and government.
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