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

There are people who say: All this is unspiritual, for the aim is to investigate the senses, the breathing. They call it materialistic self-knowledge in comparison with nebulous mystical experience. But let them try to practice it for once! They will soon discover that genuine knowledge of the sense-process reveals it to be a spiritual process and that to regard it as a material process is sheer illusion. And the same applies to the breathing process. The breathing process is a material process only when seen externally. Seen from within, it is through and through a spiritual process, actually taking its course in a world far higher than the world we perceive through our senses.