This mysterious something has been called God, the Absolute, Nature, Substance, Energy, Space, Ether, Mind, Being, the Void, the Infinite—names and ideas which shift in popularity and respectabilitywith the winds of intellectual fashion, of considering the universe intelligent or stupid, superhuman or subhuman, specific or vague. All of them might be dismissed as nonsense-noises if the notion of an underlying Ground of Being were no more than a product of intellectual speculation. But these names are often used to designate the content of a vivid and almost sensorily concrete experience—the "unitive" experience of the mystic, which, with secondary variations, is found in almost all cultures at all times. This experience is the transformed sense of self which I was discussing in the previous chapter, though in "naturalistic" terms, purified of all hocus-pocus about mind, soul, spirit, and other intellectually gaseous words.
Alan Watts