While I was standing in the Jewish archives in Warsaw, Poland, during a recent humanitarian trip to strengthen programs of protection and safety for refugees from Ukraine, time became quite circular — an evocation of William Faulkner’s adage that “the past is never dead. It’s not even past.” For brought before us were portions of an archive created at great personal risk during the Holocaust by Jewish ghetto residents that laid forth to an indifferent and inattentive world their experiences of fear, flight and displacement. What is known to history as the Ringelblum Archive produced more than 30,000 pages of...