A very interesting book about John Nash, the mathematician who extended John von Neumann's work on game theory into the realm of multi-player games. It is also an interesting look at Nash's schizophrenia, his descent into madness and his slow struggle to emerge from it. This element of the book is probably its best part; the chapters about how the spectral Nash haunted Princeton in the 1970s and 1980s as he slowly recovered his rationality are particularly fascinating. The book is very well written and readable. My criticism of it is basically on two minor counts: first, the book doesn't give enough information on the importance of John Nash's work on the study of economics, and therefore one is not sure where Nash's work stands in the scheme of things; second, the young Nash is a somewhat unsympathetic character and without the perspective of his relative importance or unimportance, one doesn't know how to judge this. Was he a jerk who advanced mankind's knowledge significantly or was he just a jerk? Overall, though, the book is very good.