“There are times when dreams sustain us more than facts. To read a book and surrender to a story is to keep our very humanity alive,” 100-year-old Holocaust survivor Helen Fagin wrote as she recounted in her lovely letter to children how books saved lives in the Warsaw Ghetto of her Nazi-occupied homeland. Around the same time, a prominent compatriot of hers attested with his own life to this elemental, salvatory power of literature. In 1939, to escape the Nazi…