Lecture IV

What I have now explained happens continually to a person between waking up and going to sleep. The thinking activity is always working on the brain, and so, throughout the waking state, it makes the brain into a mirror-apparatus for the thoughts. But it is not sufficient that the only thinking-activity worked up in us should be that worked up by ourselves. For one might say it is a narrowly limited activity that is here worked up in this way by means of the psychic-spiritual. When we wake up in the morning and are awake through the day, and in the evening fall asleep again, then the psychic-spiritual activity which belongs to the thinking is working all day long upon the brain, and thereby the brain becomes a reflecting-apparatus. But the brain must first be there; then, the soul-spiritual activity can make little furrows in the brain, or, one might say, its memoranda and engravings. The main substance and form of the brain must first be there. But that is not enough for our human life.