Dr. John Lilly, author of 'The Center of the Cyclone' and 'Man and Dolphin' draws upon 22 years of groundbreaking scientific research to present his remarkable theory and techniques of 'isolation therapy,' showing readers how to unfold and experience new degrees of self-awareness and personal harmony. Dr. Lilly has been studying isolation therapy ever since he developed this method in 1954 at this National Institute for Mental Health. Since 1973, he has been working in California with scores of men and women volunteers who have recorded their extraordinary experiences, Thse personal 'tan logs' on the feelings and fantasies experienced by Burgess Meredith, Robert Wilson, Gregory Bateson, Werner Erhard and others while in the isolation tank are presented together with the author's hypotheses and observations on peace in isolation versus 'sensory deprivation.' The book also gives standards and specifications for isolation-tank manufacture and clear step-by-step instructions on how to build and maintain your own tank. As Dr. Craig Enright says in his foreword: 'The tank is a tool for process, like meditation...the inner theater...that allows us to expand our awareness of our internal state of being...and enriches not only that realm but the course of the everyday world in which we live.'