This short peer-reviewed book offers several perspectives on the diversity of brain function, including ways pathologized as disorders, and its relationship to religious beliefs. Topics include what mystical experiences tell us about human knowledge, cognitive influences behind human beliefs in God, the relationship between mental disorders and religious visions, and the potential influence of artificial intelligence and transhumanism on religion. Finalist for the Eric Hoffer Award, the Montaigne Medal, and the International Book Awards for Religion.The author is a member of the British Royal Institute of Philosophy, and has a Ph.D. is Religion with his doctoral dissertation in the neuroscience of belief systems.