" Our desire to segregate the mind’s cogitations from the body’s exertions reflects the grip that Cartesian dualism still holds on us. When we think about thinking, we’re quick to locate our mind, and hence our self, in the gray matter inside our skull and to see the rest of the body as a mechanical life-support system that keeps the neural circuits charged. More than a fancy of philosophers like Descartes and his predecessor Plato, this dualistic view of mind and body as operating in isolation from each other appears to be a side effect of consciousness itself. Even though the bulk of the mind’s work goes on behind the scenes, in the shadows of the unconscious, we’re aware only of the small but brightly lit window that the conscious mind opens for us. And our conscious mind tells us, insistently, that it’s separate from the body. "

― Nicholas Carr , The Glass Cage: How Our Computers Are Changing Us