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Highly original and intensely stimulating. His ideas will have great value to further investigation. --S. Ulam, Scientific American (from an earlier edition) On opening The Computer and the Brain, I expected to find it 'of historical interest only' (as one of my own professors used to say rather loftily of Principia Mathematica). To the contrary, the book abounds with insights so deep they have not yet been internalized by any but a very small number of specialists. --John Derbyshire, New Criterion The mind of the later Dr. von Neumann was so luminous, so lucid, and so far reaching that interested laymen can read this book with occasional flashes of comprehension that justify the groping. --American Business (from an earlier edition) Von Neumann was one of the top experts in all aspects of computing . . . and one of the most rigorous minds ever to discuss the computational organization of brains. His last book presents one of the most sophisticated comparisons ever made between computers and brains. . . . It's a landmark in the history of computing, psychology, and neuroscience, and it's required reading for anyone interested in the foundations of those disciplines. --Gualtiero Piccinini, Minds and Machines An outstanding example of J. von Neumann's insight, brilliance and clarity. --Mathematical Reviews This book is the earliest serious examination of the human brain from the perspective of a mathematician and computer pioneer. Prior to von Neumann, the fields of computer science and neuroscience were two islands with no bridge between them. --Ray Kurzweil, from the foreword This book contains exactly the line of reasoning that inspired the architecture underlying Watson, the machine that beat the best human champions at Jeopardy!. A must read for any new computer scientist and reread for all of us who enjoy the stunning power of thoughtful observation and objective reason. --David Ferrucci, IBM T.J. Watson Research Center This innocent-looking little book lies at the eye of a hurricane. It represents a locus of clarity and calm at the center of a vast vortex of powerful arguments and competing research programs. --Paul and Patricia Churchland, on the earlier edition Perhaps the most powerful, lucid and penetrating mind in the history of computer science, von Neumann's observations about the language of the brain resonate with remarkable insight. Decades ahead of his time, he launches a thread of reasoning based on his unmatched understanding of computing that suggests the human nervous system is best understood, not as a digital machine but has a statistical one. . . . 'The nervous system is a computing machine which manages to do its exceedingly complicated work on a rather low level of precision....what matters are not the precise positions of definite markers, digits, but the statistical characteristics of their occurrences, i.e., frequencies. . . .' It is exactly this line of reasoning that inspired the essential architecture underlying Watson, the machine that beat the best human champions at Jeopardy! There is no precise mathematics to human language and yet it is the foundation for expressing human thought. Von Neumann reasons his way from analog machines to digital machines to delivering unparalleled insight into the computational paradigm underlying the human brain. A must read for any new computer scientist and reread for all of us who enjoy the stunning power of thoughtful observation and objective reason. --David Ferrucci, IBM T.J. Watson Research Center This sparse book, from the time when giants walked the halls of academe and government and laid down the basic notions of what it is to compute, remains an essential text for those interested in understanding how brains differ from computers. --Christof Koch, Allen Institute for Brain Science, and author of Consciousness: Confessions of a Romantic Reductionist

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At the time of his death in February 1957, John von Neumann, renowned for his theory of games and his work at the Electronic Computer Project at the Institute for Advanced Study, was serving as a member of the Atomic Energy Commission. Ray Kurzweil is an inventor, author, and futurist who has written six books including The Singularity Is Near: When Humans Transcend Biology.

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