Humans have always tested the boundaries between the apparently real and the inwardly real. To wonder whether life is a dream is to ask: what makes reality real? Is there an absolute difference between what we call waking life and the vivid theatre of dreams? This book does several things at once: it traces how cultures and thinkers have answered that question, surveys relevant modern scientific research, and offers spiritual practices for people who want to treat life as something to be examined, transformed, and—perhaps—woken up from.
