Lecture III

It is the same with the etheric body. The etheric body too is inserted into forces. Take one of these forces. I have often drawn attention to the fact that we human beings, as we go about on the earth, are subject to a strong force of buoyancy. We have a brain which weighs, on the average, 1,500 grammes. If the whole weight of the brain were to press on its base, the delicate blood vessels of the latter would be crushed at once. The brain does not do this, but swims in the cerebral fluid and becomes thereby subject to a force of buoyancy. It loses as much of its weight as the weight of the fluid displaced. The fluid displaced weighs about 20 grammes less than the brain itself; therefore, the brain presses on its base with a weight only of 20 grammes. So we have a heavy brain that is however not borne down with its weight, but has buoyancy. In this buoyancy we live. Our ether body lives in the buoyancy. But when we with our ego organisation slip into our ether body, then our ego is within the buoyancy, not merely indirectly, but directly. We are in the buoyancy with our ego. Our human organisation stands, in fact, in connection with all the forces of the earth, with the whole physical world, and not indirectly, but directly.