Some of the brightest minds in science have passed through the halls of the California Institute of Technology. In the early 1980s, Leonard Mlodinow joined their ranks to begin a postdoctoral fellowship. Afraid he was not smart enough to be there, despite his groundbreaking Ph.D. thesis, he took his insecurities to Richard Feynman, Caltech s intimidating resident genius and iconoclast. So began a pivotal year in a young man s life. Though a series of fascinating exchanges, Mlodinow and Feynman delve into the nature of science, creativity, love mathematics, happiness, God, art, pleasures and ambition, producing a moving portrait of a friendship and an affecting account of Feynman s final creative years."