Dreams of time travel have long haunted the human imagination. Many physicists and philosophers think that time travel is impossible; others, such as Stephen Hawking, ponder whether perhaps it could be done. Part One of this book offers a nontechnical account of some of the major current theories concerned with time travel and with the quantum mind. The mind already makes imaginary journeys in time. The mind may some day, through a special process of information transfer, make real ones. In Part Two, the reader goes on several trial-run trips in time with great writers and filmmakers as guides.