In a time such as that of the Second World War, or in civil-war France, Zweig writes, ordinary people’s lives are sacrificed to the obsessions of fanatics, so the question for any person of integrity becomes not so much “How do I survive?” as “How do I remain fully human?” The question comes in many variants: How do I preserve my true self? How do I ensure that I go no further in my speech or actions than I think is right? How do I avoid losing my soul? Above all: How do I remain free?

