3. Natural Science and Anthroposophy

You see, someone who hallucinates or has visions creates images from his body. He is simply following an inner necessity, an inner compulsion. Someone who lives in fantasy creates images from his soul. He is more or less aware of how he creates these images. And if he is a healthy person and not a lunatic, then he knows that he lives in an unreal fantasy world. What one produces in the imaginative consciousness, one knows – because the ordinary, normal consciousness, the consciousness that experiences itself in freedom, remains present – that in the imaginative consciousness one forms the images oneself, just as in mathematics one forms the formula oneself, through which one comprehends reality. But one also knows that when one enters into the spiritual world, one grasps a spiritual world through these images. So one can see that as human beings with ordinary external consciousness, we can grasp this process. In our ordinary lives and in ordinary science, we have the opportunity to gain freedom – and that is because, with mere pictorial imagining, which is not in reality, one must say: I think, therefore I am not – cogito ergo non sum. If one develops one's freedom with this thinking and then looks back into the spiritual world, one looks back into a world in which the same necessity reigns that one first encountered in the external world. In the external world, one starts from the necessity of facts. One advances into a thinking in which, so to speak, freedom repels the certainty of inner thinking.