Richard Feynman once quipped that Time is what happens when nothing else does But Julian Barbour disagrees if nothing happened, if nothing changed, then time would stop For time is nothing but change It is change that we perceive occurring all around us, not time Put simply, time does not exist In this highly provocative volume, Barbour presents the basic evidence for a timeless universe, and shows why we still experience the world as intensely temporal It is a book that strikes at the heart of modern physics It casts doubt on Einstein s greatest contribution, the spacetime continuum, but also points to the solution of one of the great paradoxes of modern science, the chasm between classical and quantum physics Indeed, Barbour argues that the holy grail of physicists the unification of Einstein s general relativity with quantum mechanics may well spell the end of time Barbour writes with remarkable clarity as he ranges from the ancient philosophers Heraclitus and Parmenides, through the giants of science Galileo, Newton, and Einstein, to the work of the contemporary physicists John Wheeler, Roger Penrose, and Steven Hawking Along the way he treats us to enticing glimpses of some of the mysteries of the universe, and presents intriguing ideas about multiple worlds, time travel, immortality, and, above all, the illusion of motion The End of Time is a vibrantly written and revolutionary book It turns our understanding of reality inside out