The first complete biography of an influential historian whose dramatic life intersected with many great events and thinkers of the twentieth century This is the first complete biography of Ernst Kantorowicz (1895–1963), an influential and controversial German-American intellectual whose colorful and dramatic life intersected with many of the great events and thinkers of his time. A medieval historian whose ideas exerted an influence far beyond his field, he is most famous for two books―a notoriously nationalistic 1927 biography of the Holy Roman Emperor Frederick II and The King's Two Bodies (1957), a classic study of medieval politics. Born into a wealthy Prussian-Jewish family, Kantorowicz fought on the Western Front in World War I, was wounded at Verdun, and earned an Iron Cross; later, he earned an Iron Crescent for service in Anatolia before an affair with a general’s mistress led to Kantorowicz being sent home. After the war, he fought against Poles in his native Posen, Spartacists in Berlin, and communists in Munich. An ardent German nationalist during the Weimar period, Kantorowicz became a member of the elitist Stefan George circle, which nurtured a cult of the "Secret Germany." Yet as a professor in Frankfurt after the Nazis came to power, Kantorowicz bravely spoke out against the regime before an overflowing crowd. Narrowly avoiding arrest after Kristallnacht, he fled to England and then the United States, where he joined the faculty at Berkeley, only to be fired in 1950 for refusing to sign an anticommunist “loyalty oath.” From there, he “fell up the ladder” to Princeton’s Institute for Advanced Study, where he stayed until his death. Drawing on many new sources, including numerous interviews and unpublished letters, Robert E. Lerner tells the story of a major intellectual whose life and times were as fascinating as his work. "A richly illuminating study . . . [and] a timely meditation on the vicissitudes of abstract, purist ideals under the pressure of savage real-world events." ---George Prochnik, New York Times Book Review "[A] finely grained portrait." ---Robert E. Norton, Times Literary Supplement "A thorough and fascinating chronicle." ---Brendan Simms, Wall Street Journal "Robert Lerner . . . relates this amazing story with both carefully researched detail and engaging verve." ---Michael D. Bailey, Montreal Review "A labour of love inspired by youthful sightings of its charismatic subject. . . . Lerner's admirable study suggests that our understanding of the mind of the 20th century might be enriched by looking back at Kantorowicz’s brilliant, if recondite scholarship, alongside this tribute to its author." ---Stoddard Martin, Jewish Chronicle "Lerner's accessible, conversational tone and deft use of quotation bring Kantorowicz to life, showing the man behind the scholar and the development of a brilliant mind over a lifetime. Throughout, Kantorowicz’s voice is sharply present. Lerner admits that, posthumously, motivations are impossible to discern, but his discernment is a gift in this unflinching treatment of Kantorowicz’s legacy." ---Letitia Montgomery-Rodgers, Foreword "[Robert Lerner] sets Kantorowicz in the context of his time, uniting heroic archival research, including numerous interviews with Kantorowicz's associates and friends, with discerning judgments to trace his remarkable odyssey. The result is a valuable contribution to modern European and American intellectual history." ---Jacob Heilbrunn, The National Interest "The extraordinary story of Kantorowicz's passage from Posen to Princeton via California is admirably told by Robert E. Lerner, and he has undoubtedly written the biography of record." ---Hamish Robinson, The Oldie "Lerner's biography is worthy of great praise, and it is very unlikely that it will ever be superseded." ---Walter Laqueur, Jewish Review of Books "A lively and authoritative text, which should endear Kantorowicz to many historians of the present day. . . . Ernst Kantorowicz: A Life is a deeply informed and profoundly considered work that should take its place proudly among the other biographies of notable figures brought out by Princeton University Press." ---BookPleasures.com "Compelling. . . . A major success. . . . It is heartily recommended not only to medievalists interested in how Kantorowicz shaped our field, but also to those working in German and German American studies as well as scholars of the history of ideas, politics, Jewish life, universities, and more." ---Lezlie Knox, H-Net Reviews "Lerner adds much to our understanding of Kantorowicz’s works, and these intellectual history aspects of the biography are its greatest strength." ---Jonathan R. Lyon, German History "There is much in the biography that is superb--the opulence of detail, the thumbnail sketches of those involved in Kantorowicz’s life, the marvelous analysis of several of Kantorowicz’s writings, the capsule contextualizations of his