I. Soul and Spirit in the Human Physical Constitution

This shows us that by taking these different organisms into account we come nearer to the life of soul. Materialistic observation, which stops short at the solid structure and insists that in the very nature of things water cannot become an organism, is bound to confront the life of soul with complete lack of understanding; for it is precisely in these other organisms that the life of soul comes to immediate expression. The solid organism itself is, in reality, only that which provides support for the other organisms. The solid organism stands there as a supporting structure composed of bones, muscles, and so forth. Into this supporting structure is membered the fluid organism with its own inner differentiation and configuration; in this fluid organism vibrates the etheric body, and within this fluid organism the thoughts are produced.