Edgar Cayce grew up in poverty and achieved only an eighth-grade education. By the time he was a teenager he was able to memorize an entire book simply by placing it near his head when he slept. As an adult, Cayce discovered that while in a trance he could diagnose illnesses. His medical readings, which were years ahead of their time, have been proven to be 90 percent accurate. His abilities helped him become a world-renowned psychic.