The Doors of Perception and Heaven and Hell

The Doors of Perception: And Heaven and Hell (Vintage classics)

Aldous Huxley

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Opening the Doors of Perception: The Key to Cosmic Awareness

Anthony Peake

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Brave New World

Aldous Huxley

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The Da Vinci Code

Dan Brown

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LSD: Doorway to the Numinous: The Groundbreaking Psychedelic Research into Realms of the Human Unconscious

Stanislav Grof M.D.

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The Story of Philosophy

Will Durant

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