The descriptions in the literature of mystical experience and psychedelic experience, such as that induced by LSD, are usually written by persons who have actually experienced only one or perhaps neither of the two states. Because many of the most important effects can be understood by direct experience but only partially described in ordinary language, such lack of direct experience is a major drawback. Since there is disagreement over the question of whether mystical experience and LSD experience can be ‘the (...) same’, it would be helpful if an individual who has experienced aspects of both states would compare them. One of the authors describes his experience with both states. A particular form of mystical experience, cosmic consciousness , occurred spontaneously; no mind altering drugs were used. ALS later took LSD on 12-15 occasions. Both states of consciousness involved alterations in time sense, subject/object boundary, cognition, mood and perception. However, the changes with CC were qualitatively and quantitatively different from those of LSD. The authors conclude that CC and LSD can be quite different states of consciousness, although we cannot completely rule out the possibility that psychedelics might sometimes induce the same kinds of mystical experiences that occur for non-drug reasons. (shrink)

The Gifford Lectures were established in 1885 at the universities of St Andrews, Glasgow, Aberdeen and Edinburgh to promote the discussion of 'Natural Theology in the widest sense of the term - in other words, the knowledge of God', and some of the world's most influential thinkers have delivered them. The 1901–2 lectures given in Edinburgh by American philosopher William James are considered by many to be the greatest in the series. The lectures were published in book form in 1902 (...) and have been reprinted many times. James, who was educated in the United States and Europe, and spent much of his career teaching philosophy at Harvard, was very influential in the development of modern psychology, and in these twenty lectures he explores the personal experience of religion. Some of the topics include religion and neurology, 'the sick soul', saintliness, and mysticism. (shrink)