“I believe that there is a necessary connection in both directions between the physical and the mental, but that it cannot be discovered a priori. Opinion is strongly divided on the credibility of some kind of functionalist reductionism, and I won't go through my reasons for being on the antireductionist side of that debate. Despite significant attempts by a number of philosophers to describe the functional manifestations of conscious mental states, I continue to believe that no purely functionalist characterization of a system entails — simply in virtue of our mental concepts — that the system is conscious.”

http://www.billevanswebpages.com/billquotes.html.

In Search of Memory (2006)

Essay as "Mr. X" (1969)
Context: When I'm high I can penetrate into the past, recall childhood memories, friends, relatives, playthings, streets, smells, sounds, and tastes from a vanished era. I can reconstruct the actual occurrences in childhood events only half understood at the time. Many but not all my cannabis trips have somewhere in them a symbolism significant to me which I won't attempt to describe here, a kind of mandala embossed on the high. Free-associating to this mandala, both visually and as plays on words, has produced a very rich array of insights.
There is a myth about such highs: the user has an illusion of great insight, but it does not survive scrutiny in the morning. I am convinced that this is an error, and that the devastating insights achieved when high are real insights; the main problem is putting these insights in a form acceptable to the quite different self that we are when we're down the next day.

"The Protestant Mystics", p. 72
Forewords and Afterwords (1973)
Context: The mystics themselves do not seem to have believed their physical and mental sufferings to be a sign of grace, but it is unfortunate that it is precisely physical manifestations which appeal most to the religiosity of the mob. A woman might spend twenty years nursing lepers without having any notice taken of her, but let her once exhibit the stigmata or live for long periods on nothing but the Host and water, and in no time the crowd will be clamoring for her beatification.

Washington Post (September 10, 1981).

Source: Wild Roses

R.S. Lynd (1939) Knowledge of What? p. 125-6, cited in Karl William Kapp (1976), The nature and significance of institutional economics http://onlinelibrary.wiley.com/doi/10.1111/j.1467-6435.1976.tb01971.x/abstract. in: Kyklos, Vol 29/2, Jan 1976, p. 209