Religion in the Cartography of the Unconscious: A Discussion of Stanislav Grof's Realms of the Human Unconscious
"In my experience, everyone who has reached these levels develops convincing insights into the utmost relevance of the spiritual and religious dimensions in the universal scheme of things. Even hardcore materialists, positivistically oriented scientists, skeptics and cynics, and uncompromising atheists and antireligious crusaders such as the Marxist philosophers suddenly became interested in a spiritual search after they confronted these levels themselves.'