Practical Mysticism IV. The Pharmacopoeia of The Soul

The core of Huxleys argument rests on the idea that the brain and nervous system function primarily as a "reducing valve." Evolution, he posited, did not design the mind to perceive the totality of reality; such an unfiltered flood of information would be biologically useless and likely fatal. Instead, the mind is a biological instrument designed to help us survive on the surface of the planet.