Lecture II

It is at this point that our way of looking at things first becomes heretical to orthodox natural science. The entire heart-lung tract—the vascular system—is the means whereby the foods that have now become entirely inorganic so to speak, are led over into the realm of life. The human organization cannot exist without providing its own life. In a more encompassing sense, what happens here resembles the process occurring when the inorganic particles of protein, let us say, are transformed into organic; into living protein, when dead protein becomes living protein. Here again we do not need to enter into the question of the inner being of man but only into what is continually being said in physiology. Due to the shortness of time we cannot speak of the scientific theories about how the plant produces living protein, but in the human being it is the system of heart and lungs, with all that belongs to it, that is responsible for transformation of the protein into something living after the chyle has become as inorganic as possible.