Book excerpt: The first major biography of preeminent historian and intellectual Arthur Schlesinger Jr., a defining figure in Kennedy’s White House. Arthur M. Schlesinger Jr. (1917–2007), known today as the architect of John F. Kennedy’s presidential legacy, blazed an extraordinary path from Harvard University to wartime London to the West Wing. The son of a pioneering historian—and a two-time Pulitzer Prize and National Book Award winner in his own right—Schlesinger redefined the art of presidential biography. A Thousand Days, his best-selling and immensely influential record of the Kennedy administration, cemented Schlesinger’s place as one of the nation’s greatest political image makers and a key figure of the American intellectual elite—a peer and contemporary of Reinhold Niebuhr, Isaiah Berlin, and Adlai Stevenson. The first major biography of this defining figure in Kennedy’s Camelot, Schlesinger: The Imperial Historian presents a dramatic life and career set against the backdrop of the American Century. Biographer Richard Aldous draws on oral history, rarely seen archival documents, and the official Schlesinger papers to craft a portrait of the incandescently brilliant and controversial historian who framed America’s ascent to global empire.