I mourned the untimely passing of actor Philip Seymour Hoffman for the very personal reason that I hoped he would one day get to play Whittaker Chambers in a film version of Chambers’ 1952 masterwork, Witness. Short, heavy set, permanently rumpled, Hoffman would have made a near perfect Chambers to George Clooney’s Alger Hiss, the smooth, handsome, establishment golden boy. Chambers’ 800-page story of his life and their encounter remains the great political book of the twentieth century. Chambers was a deep thinker, a dazzling writer, and a reluctant participant in the most riveting political drama of the era. No...