A BRIEF HISTORY OF EVERYTHING is one of the most popular books I have written, which is heartening in that it contains a good deal of the integrative vision that I have tried to develop. “Integrative” simply means that this approach attempts to include as many important truths from as many disciplines as possible—from the East as well as the West, from premodern and modern and postmodern, from the hard sciences of physics to the tender sciences of spirituality. As one critic put it, this integrative approach “honors and incorporates more truth than any approach in history.” I would obviously like to believe that is true, but you can best be the judge of that as you read the following pages.