Lecture IX

We know that when an individual has spent this period of life in the super-sensible world and passes into physical existence again through birth, he becomes in a certain way the moulder of his own bodily constitution, indeed of his whole destiny in the life on Earth. Within certain limits the human being builds and fashions his body, even the very convolutions of his brain, by means of the forces brought with him from the spiritual worlds when he enters again into physical existence through birth. Our whole earthly existence depends upon our physical body possessing organs which enable us to come in touch with the outer physical world, to act and moreover to think in that world.