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Lawrence LeShan (born 1920) is a psychologist, educator and the author of the best-selling How to Meditate (1974), one of the first practical guides to meditation. He has authored or co-authored approximately 75 articles in the professional literature and thirteen books on a diverse range of topics including psychotherapy, war, cancer treatment, and mysticism. He has also written science fiction under the pseudonym Edward Grendon.

LeShan holds a Ph.D. in Human Development from the University of Chicago and has taught at Pace College, Roosevelt University, and the New School for Social Research. He worked as a clinical and research psychologist for more than 50 years, including six years as a psychologist in the U.S. Army.

In the 1960s and 1970s, LeShan conducted extensive research in the field of parapsychology. In books The Medium, the Mystic, and the Physicist and Alternate Realities, he investigated similarities between quantum mechanics and mystical thought. In World of the Paranormal: The Next Frontier, LeShan advanced these ideas further, claiming that psychic abilities such as telepathy, clairvoyance, and precognition can be explained using quantum theory. While shared by many in the New Age movement, LeShan's ideas have been criticized by skeptics as "quantum pseudo-mysticism."

In the 1980s, LeShan's focus shifted to the psychotherapy of cancer support, a field in which he is considered a pioneer. LeShan lives in New York City.

LeShan was married to the late Eda LeShan, who was also a writer.

This author page uses material from the Wikipedia article "Lawrence LeShan", which is released under the Creative Commons Attribution-Share-Alike License 3.0