Fences such as the one at the heart of The Boy in the Striped Pajamas still exist; it is unlikely that they will ever fully disappear. But whatever reaction you have to this story, I hope that the voices of Bruno and Shmuel will continue to resonate with you as they have with me. Their lost voices must continue to be heard; their untold stories must continue to be recounted. For they represent the ones who didn't live to tell their stories themselves.