Edgar Cayce (March 18, 1877 – January 3, 1945) was an American Christian mystic who answered questions on subjects as varied as healing, reincarnation, wars, Atlantis, and future events while in a trance. A biographer gave him the nickname, "The Sleeping Prophet." Some consider him the true founder and a principal source of the most characteristic beliefs of the New Age Movement.

A nonprofit organization, the Association for Research and Enlightenment,was founded to facilitate the study of Cayce's work. A hospital and a university were also established.

Cayce became a celebrity toward the end of his life, and he believed the publicity given to his prophecies overshadowed the more important parts of his work, such as healing the sick and studying religion. Many challenge Cayce's alleged psychic abilities, and traditional Christians also question his unorthodox answers on religious matters such as reincarnation, and the Akashic records.

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