A foremost string theorist and the author of The Elegant Universe discusses such topics as Newtons perspectives on space, Einsteins fusion of space and time, and recent breakthroughs on multidimensional universe theory. Reprint. 150,000 first printing. A foremost string theorist discusses such topics as Newtons perspectives on space, Einsteins fusion of space and time, and recent breakthroughs on multidimensional universe theory.