This book is a comprehensive document the lives of inmates of concentration camps. Indeed, the daily life of prisoners is detailed, and the conditions of life and death of these tens of thousands of individuals. Hunger, cold, work, fatigue, beatings were the daily. But flights and other manipulations between inmates. I''ve been surprised by the lack of solidarity among the prisoners, I do not find m''attendais of violence between them. But this situation is so unique, unusual and inhumane. Often no words to this author in order to describe the horrors qu''il lived or seen. Our vocabulary does not understand these close situations of hell. We come, we also drive, not to be surprised or shocked when the author talks about the death or other tragic fate of these companions in misfortune. And it ''s here that we can realize that we can not imagine (even with books, films and other documentary sources) that these people have lived (and thankfully). We understand that the worst thing that one can do to a man of the n''est not deprived of his freedom, beat, or kill him, but to take his humanity, qu''il is qu''un pile of empty flesh without thought, deprived of his mind. This book is to read beyond the "duty of memory", it defines us what a man.