Don Isaac Abravanel (1437–1508) is acknowledged as one of the last great medieval Jewish philosophers, but also one of the first early modern Jewish thinkers to integrate Renaissance humanism and republican ideas into his exegetical and philosophical work. However, the history of the modern rediscovery of Abravanel’s political thought, as well as its philosophical and political context after the fall of the Weimar Republic in 1933 and during first years of the Nazi regime, remains largely unknown. This research project is devoted to reconstructing this important chapter in early twentieth century German-Jewish scholarship. The completed book manuscript will be submitted to a major US publishing house in 2022-2023. A first article on the topic has been published : Cedric Cohen Skalli, “Between Yitzhak Baer and Leo Strauss: The Rediscovery of Isaac Abravanel’s Political Thought in the late 1930s,” DAAT 88 (2019): 161-289. This essay has received great attention and will be translated into Spanish.