Who, apart Yalom, could have written a detective novel historical-philosophical? Not only he does, but he does it brilliantly, featuring Spinoza in the 17th century and one of the instigators of extremists Hitler 20th. Spinosa, the Jew banned from his community because he is free from the superstitions and comedies of religious life, and that unscrupulous Nazi who wonders just how the Jewish Spinosa to have inspired so much respect and admiration for Goethe, thinker , writer, poet "so German". Beyond the beaten path, Yalom has once again managed to blend well established in the literature genres, to deliver us from our demons and think freely. Yalom, known for its excellent books on group psychotherapy, definitely has many different talents, and always the same intelligent clarity for us in delivering its productions. A treat