From the Edgar Cayce's Association for Research and Enlightenment, Inc. (A.R.E.®):
The Akashic Records or "The Book of Life" can be equated to the universe's super computer system. It is this system that acts as the central storehouse of all information for every individual who has ever lived upon the earth. More than just a reservoir of events, the Akashic Records contain every deed, word, feeling, thought, and intent that has ever occurred at any time in the history of the world. Much more than simply a memory storehouse, however, these Akashic Records are interactive in that they have a tremendous influence upon our everyday lives, our relationships, our feelings and belief systems, and the potential realities we draw toward us.
These records connect each one of us to one another. They contain the stimulus for every archetypal symbol or mythic story which has ever deeply touched patterns of human behavior and experience. They have been the inspiration for dreams and invention. They draw us toward or repel us from one another. They mold and shape levels of human consciousness. They are a portion of Divine Mind.