V. Can a method of gaining insight into spheres beyond the sense-perceptible world be given a scientific basis?

Gaining insight into the world of nature thus has a remarkable result. We are unable to gain such insight without thinking. And so it is that something which presents itself to us as being in existence in a truly robust way, I might say, tells us of the non-existence of this, our own soul nature. When I come to speak of psychology the day after tomorrow, this line of thought will be taken further in a popular form. At present I have to refer to something that shows the same thing from the other side: I am not and I perceive that when I am thinking I am not in my thinking, that another experience is coming to meet this experience from a completely different side in the human soul. It comes to meet it in so far as something exists for the unbiased observer of soul that is not accessible to any form of thinking. Anyone who considers the history of philosophy with sound common sense, considering those who have seriously taken up the enigmas of human insight and life, will find that there is always and everywhere something in the life of the human soul where one has to say to oneself: However great your acuity may be as you apply perceptiveness trained in the natural scientific discipline, you cannot gain insight into anything that lies in your will.