Lecture VI

The activity manifesting in breathing is also revealed outwardly in the excretion of carbon in carbon dioxide. But the inward activity of spiritualization is bound up with nitrogen. The nitrogen that has been used in spiritualization is eliminated, and the degree to which nitrogen is eliminated is a measure of the inner work of the human organs in the direction of spirituality. You can conclude from this that one who does not believe in such spirituality will obviously have to remain very unclear about the absorption of nitrogen in the human organism. The role played by nutrition can be clarified only if one knows how in all protein formation there unfolds an activity directed outward and one directed inward. If you study this process, which is essentially a breathing process with its polar opposite, you will realize that nutrition and digestion border everywhere on the breathing processes, that nutrition and digestion everywhere encounter the processes of breathing and spiritualization.