Professor Hawking transformed our view of the universe in his landmark best selling book A Brief History of Time and most recently in the best selling The Universe in a Nutshell. Here he reviews ideas about the universe from Aristotle to Newton and Einstein, applying the principle of quantum mechanics to the Big Bang, black holes, and the universe's ultimate fate. He goes on to advance a "no boundary" theory of time and space that could lead to one unified theory and a true understanding of our universe. The Theory of Everything presents the most complex theories, both past and present, of physics; yet it remains clear and accessible. It will enlighten listeners and expose them to the rich history of scientific thought and the complexities of the universe in which we live.