PositiveThe Wall Street JournalIn the years after World War II, both physics and mathematics grew and flourished without paying much attention to each other, and it was not until the late 1960s that the fields began drawing closer once again, shaping each other’s agendas in surprising ways. Mr. Farmelo tells the story of their convergence with a keen eye for anecdotes, and the excitement of an eyewitness to an intellectual revolution ... Is the fulfillment of the Pythagorean dream of a mathematical universe finally at hand? Mr. Farmelo, deeply impressed with the accomplishments of Einstein, Dirac and string theorists, is optimistic. But only time will tell.