Lecture VI
This interaction of air and water forces is continually ongoing in the human organism. Of course, neither completely suppresses the other; hence we always inhale traces of water vapor with the air. There the etheric element encroaches on the breathing. Similarly, the breathing activity encroaches on the digestive and nutritive organs. In so far as you are formed out of protein, you also breathe. Thus these activities always overlap, and we are always faced with a predominance of one activity or another in one organ or another. There is nothing here that can be described in a one-sided way. We can never describe this or that organ as being exclusively a respiratory organ. If we maintain this about the lung, we are in error. The other activity is always there, even if to a lesser degree. Nutrition takes place primarily through an activity that impresses itself on the fluid-etheric and on the solid-physical. Therefore nutritive and digestive activities occur primarily in the ethericfluid and the physical-solid, whereas the main respiratory activity is developed in the astral-airy, and the main ego activity, the actual spiritual activity, unfolds in the warmth conditions connected with the ego itself. Spiritual activity within the physical organism is a cooperation of the ego with warmth conditions, i.e., with all those organizations where warmth can work into the physical. The ego must always go hand in hand with warmth, must always operate through warmth. If we put a patient to bed and tuck him in, this is simply an appeal to the ego to make use of the warmth generated in an appropriate way.