When one starts reading the book "Gödel's demons," is expected to get at least some information about the incompleteness theorem, which is the mistress of discovery Austrian-American logician. This especially since the author is an associate in mathematics and doctor of philosophy. Unfortunately it is not. The author, based on the notebooks of Gödel, consulted at Princeton, only portray the mindset of Gödel, that we end up with the feeling that he was suffering from schizophrenia and mental retardation! This 260-page book contains many repetitions and redundancies. It may take in less than half the volume. Overall, pretty disappointing. If one wishes to obtain a good view of the work of Gödel, it is best to read the little book "Gödel's theorem" Ernest Nagel Gödel's Theorem. It is written in clear language and elegant, easily understood and is fully documented.