9. The Etherization of the Blood

From what has been said we have seen that the life of forming mental pictures is one of the poles of one's soul life. This life of forming mental pictures is something that seems unreal to externally, materialistically minded people. We often hear the thought expressed, “Oh, mental pictures and thoughts are only mental pictures and thoughts!” This is intended to imply that if one takes a piece of bread or meat into one's hands, this is a reality, but a thought is only a thought. By this is meant that one cannot eat a thought, and thus a thought is not real but “only” a thought. But why? Basically, because what man calls his thoughts are related to what thoughts really are as a shadow-image of an object is to the thing itself. The shadow-image of a flower points you to the flower itself, to the reality. So it is with thoughts. Human thinking is the shadow-image of mental pictures and beings belonging to a higher world, the world called the astral plane. You represent thinking rightly to yourself when you picture the human head thus (this is not absolutely correct but simply sketched schematically). In this head are thoughts, which I shall represent with these dashes. These thoughts that are in the head, however, must be pictured as living beings on the astral plane. Beings of the most varied kinds are at work there in the form of teeming mental pictures and deeds that cast their shadow-images into human beings, and these processes are reflected in the human head as thinking. Continuous streams move from your head into the astral plane, and these are the shadows that establish the life of thought within your head.