Prompted by the suicides of Jean Amery and Primo Levi, Harold Kaplan sought to ask what the Holocaust can be said to affirm even even in the face of its overwhelming negation of meaning. "I wrote this book," he explains, "to translate the Holocaust out of the moral and intellectual shock which contemplates the alienation of humanity from itself. I wished to understand the 'crime against humanity' as a viable category of the moral reason. And I wished...