No scientific quest is as exciting and elusive as the search to understand the Universe. Falk's book places this search in its historical context, tracing the quest from its roots in ancient Greece to the twenty-first century, through the breakthroughs of Newton, Maxwell, and Einstein, up to the excitement of "string theory" and today's efforts to merge quantum theory with general relativity. With as much emphasis on history as on science, Falk's enlightening and entertaining book is aimed very much for the general reader. The search for a Unified Theory is full of quirky personalities, interesting tales, and moments of brilliance-high science and high drama.