Based on a series of lectures given at Cambridge University, Professor Hawking's work introduced "the history of ideas about the universe" as well as today's most important scientific theories about time, space, and the cosmos in a clear, easy-to-understand way. "The Theory of Everything" presents the most complex theories, both past and present, of physics; yet it remains clear and accessible. It will enlighten readers and expose them to the rich history of scientific thought and the complexities of the universe in which we live.