Quantum Psychology: How Brain Software Programs You & Your World is a book written by Robert Anton Wilson, originally published in 1990. Some consider Quantum Psychology a follow-up to Wilson's earlier volume Prometheus Rising, mainly for the presence of practical exercises to demonstrate its concepts at the end of each chapter (this time intended for groups rather than a lone reader). It focuses primarily on the metaphysical and epistemological problems of Aristotelean reasoning and its use in everyday language, covering E-Prime and how it addresses many of the semantic (and resulting perceptual) "spooks" that common language lets in.