Max Tegmark visited Google's Cambridge, MA office to discuss his book, "Our Mathematical Universe: My Quest for the Ultimate Nature of Reality". The book describes his quest to explore the ultimate nature of reality, from the microcosm to our universe and beyond.Dr. Tegmark is an MIT physics professor who loves thinking about life's big questions. He is author or coauthor of more than two hundred technical papers, and his work with the Sloan Digital Sky Survey collaboration on galaxy clustering shared the first prize in Science magazine's "Breakthrough of the Year 2003".