“…our normal waking consciousness, rational consciousness as we call it, is but one special type of consciousness, whilst all about it, parted from it by the filmiest of screens, there lie potential formas of consciousness entirely different. We mau go through life without suspecting their existence; but apply the requisite stimulus, and at a touch they are there in all their completeness, definite type of mentality which probably somewhere have their field of application and adaptation. No account of the universe in its totality can be final which leaves these other forms of consciousness quite disregarded. How to regard them is the question – for they are so discontinuous with ordinary consciousness. Yet they may determina atitudes though they cannot furnish formulas, and open a region though they fail to give a map. At any rate, they forbid a premature closing of our accounts with reality.”

— William James, The Varieties of Consciousness: Observations on Nitrous Oxide (c. 1880-1910?).

“A philosopher who is content merely to know about the ultimate Reality – theoretically and by hearsay – is compared by the Buddha to a herdsman of other men’s cows. Mohammed uses an even homelier barnyard metaphor. For him the philosopher who has not realized his metaphysics is just an ass bearing a load of books. Christian, Hindu and Taoist teachers wrote no less emphatically about the absurd pretensions of mere learning and analytical reasoning.
The Perennial Philosophy and its ethical corollaries constitute a Highest Common Factor, present in all the major religions of the world. To affirm tis truth has never been more imperatively necessary than at the present time.”

— Aldous Huxley, The Perennial Philosophy (c. 1944).

“Mind, not consciousness, is characterized by intentionality and, what’s more, there is, to use Franklin Merel-Wolff’s words, an authentic philosophy of consciousness without an object. It is this implicit distinction that was underlying the original stirrings of the transpersonal movement without humanistic psychology – a sense of the transintentional nature of Being, the underlying fabric, space, or ground from which all that is human plays.”

— Roanld S. Valle, The Emergence of Transpersonal Psychology in Existential-Phenomenological Perspectives in Psychology (1989).