P.D. Ouspensky
Author: P.D. Ouspensky
Publisher: Vintage (1971)

It must be clearly understood that consciousness and functions are quite different things. To move, to think, to feel, to have sensations—these are functions; they can work quite independently of whether we are conscious or not; in other words, they can work mechanically. To be conscious is something quite different. But if we are more conscious it immediately increases the sharpness of our functions.