LSD is a unique and powerful tool for the exploration of the human mind and human nature. Psychedelic experiences mediate access to deep realms of the psyche that have not yet been discovered and acknowledged by mainstream psychology and psychiatry. They also reveal new possibilities and mechanisms of therapeutic change and personality transformation.

— Stanislav Grof LSD psychotherapy (1980)

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Quote text and notes from Wikiquote: Stanislav Grof (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.