VII. Inner Processes in the Human Organism. Sense-Perception, Breathing, Sleeping, Waking, Memory

Man perceives the things of the world through his senses but with his ordinary consciousness he does not perceive what takes place within the senses themselves. Were he to do this in everyday life he would not be able to perceive the outer world. The senses must, as it were, renounce themselves if they are to bring to man's cognizance what lies outside the senses in the world immediately surrounding him on Earth. If our ear could speak or our eye could speak, if we could by this means become aware of the processes taking place in those organs, we should not be able to hear what is outwardly audible nor see what is outwardly visible. But it is precisely this that enables man to know the world round about him, in so far as he is an Earth-being; he does not, however, thereby learn to know himself. This presupposes that during the process of acquiring self-knowledge one is able to suspend all cognition of the outer world, so that for a time nothing at all is experienced from the external world.