What is science and what is its true value? Can a scientist believe in God? Why, in this supposedly scientific age, is there such widespread fascination with flying saucers, faith healing, astrology and alien invasion? Can there be such a thing as a satisfactory philosophy of ignorance? At the peak of his career, maverick genius Richard Feynman gave three public lectures addressing the questions that most inspired and troubled him. Covering everything from the atomic bomb to ethics, the imagination to the meaning of life, they are brought together in this provocative and hugely entertaining volume.