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Sacred Knowledge is the first well-documented, sophisticated account of the effect of psychedelics on biological processes, human consciousness, and revelatory religious experiences. Based on nearly three decades of legal research with volunteers, William A. Richards argues that, if used responsibly and legally, psychedelics have the potential to assuage suffering and constructively affect the quality of human life.

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Sacred Knowledge is not only timely and relevant to a whole host of current social/legal issues but also addresses, with seemingly effortless ease, many of the deeper/subtler metaphysical implications of psychedelics - their therapeutic and spiritual potential. Richards´s clear prose makes articulating such difficult topics look easy. G. William Barnard, Southern Methodist University

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William A. Richards is a clinical psychologist at the Johns Hopkins Bayview Medical Center with formal training in theology and comparative religion. Earlier in his career, he pursued psychedelic research at Spring Grove Hospital Center and the Maryland Psychiatric Research Center in Baltimore. His graduate education included studies at Yale University, Brandeis University, Catholic University, the Andover-Newton Theological School, and the University of Göttingen.

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