Jacques Le Goff (1 January 1924 – 1 April 2014) was a French historian and prolific author specializing in the Middle Ages, particularly the 12th and 13th centuries.Le Goff championed the Annales School movement, which emphasizes long-term trends over the topics of politics, diplomacy, and war that dominated 19th century historical research. From 1972 to 1977, he was the head of the École des hautes études en sciences sociales (EHESS).