Each of us believes himself to live directly within the world that surrounds him, to sense its objects and events precisely, and to live in real and current time. I assert that these are perceptual illusions ... Each of us lives within the universe - the prison of his own brain.
Vernon Benjamin MountcastleEach of us lives within the universe - the prison - of his own brain. Projecting from it are millions of fragile sensory nerve fibers, in groups uniquely adapted to sample the energetic states of the world around us: heat, light, force, and chemical composition. That is all we ever know of it directly; all else is logical inference.
Vernon Benjamin Mountcastle