13. The Value of Extrasensory Knowledge for the Human Soul

But, dear attendees, spiritual science in the true sense of the word is not based on any different ground than natural science, not even with regard to everything that natural science can talk about. When we consider ordinary thinking in everyday life and ordinary science, how does it appear to the spiritual researcher? It appears to him that this ordinary thinking, that which man can muster in thinking and imagining in ordinary life and in ordinary science, is bound in the strictest sense to the life of the human body, in the narrower sense to the human nervous system. And in so far as natural science today is already beginning to show a knowledge in this direction, which promises to give much more in the future, the spiritual researcher stands completely on the ground of natural science. But for natural science it is only a matter of ordinary thinking, of the inner power of thinking that has not yet been detached from the physical. The spiritual researcher is well informed about the thoughts of everyday life, about what can be imagined in ordinary science. All this thinking of everyday life is just as bound to the physical if it is to come to consciousness in the human being as the image that is to appear to us of ourselves is bound to the mirror before which we stand.