"A first-rate presentation of the life of a first-rate scientific mind.it is hard to imagine a more thoughtful and warm biography than this one" -- Douglas Hofstadter New York Times Book Review "One of the finest scientific biographies I've ever read: authoritative, superbly researched, deeply sympathetic and beautifully told" Sylvia Nasar, author of A Beautiful Mind "Andrew Hodge's book is of exemplary scholarship and sympathy. Intimate, perceptive and insightful, it's also the most readable biography I've picked up in some time" Time Out "One of the finest scientific biographies ever written" New Yorker "Save your money for the forthcoming new edition of Alan Turing: The Enigma by Andrew Hodges, regarded by many as one of the greatest biographies of anyone, let along Turing" -- Robert Matthews BBC Focus Magazine