Twice in the final years of his life, Elder Neal A. Maxwell told a grandson of Henry Eyring's, "You need to write your grandfather's story." This is that story of Henry Eyring, perhaps the Church's most acclaimed scientist. It is a book about science and Mormonism, written to be easily understood by newcomers to both subjects. It demonstrates why one of the Church's highest-profile intellectuals was also one of its humblest believers. In fact, this story of Henry Eyring shows how intellect and belief go hand-in-hand and how simple, faithful people can change the world.