First of all let me say that I am aware that this is controversial author and I fully intend to read some of his adversaries as Simon has helpfully pointed out. nevertheless I find this book so happy full of rich and varied Source material with Jewish and non-jewish that this is worth a 5-star rating simply because it is definitely a reference book that I would want to have in the original French.

Second and more importantly, I think I would probably translate this book as the essence of Judaism.
Finally , he appears to Define Judaism as a willingness to , even in the face of danger, question and use knowledge based on logic . To me this seems to fall within the idea of defining Jewish people as those who wrestle with God. I personally equate his questioning and Knowledge or Learning with the Rabbinical command to learn and to teach since the best students ore a good student must ask questions.

En fin, I do not agree with everything he said but in the case that he is making I believe he puts forth valid arguments and this book is well worth studying arguing with and learning all his Source materials . I'll be reading it again in the original French.