Lecture X
We realize from simple superficial observation that everything that enters the human being as cold shows the tendency to go to the nerve-sense system. And today we can point out that everything that works as cold, everything of a winter nature, works in the building up of our head, of our nerve-sense organization. Everything of a summer nature, everything that contains warmth, is given over to our metabolic-limb system. If we look at our metabolic-limb system, we can see that we carry within it everything summery. If we look at our nerve-sense functions, we can see that we carry in them everything we receive out of the universe that is wintry. So in our head we always have winter; in our metabolic-limb system we always have summer. And our rhythmic system maintains the balance between the one and the other. Warmth-cold, warmth-cold, metabolic system-head system, with a third system keeping them in balance. Material warmth is only a result of warmth processes, and material cold the result of cold processes. So we find a play of cosmic rhythm in the human organism. We can say that winter in the macrocosm is the creative force in the human nerve-sense system centered in the head. Summer in the macrocosm is the creative force in the human metabolic-limb system.