Steiner on the functioning of the heart

"The mechanical-materialistic doctrine of life sees in the heart a kind of pumping mechanism which drives the blood through the body in a regular manner. Here the heart is the cause of the movement of the blood. The insight of the science of the spirit shows something quite different. For this insight, the pulsing of the blood, its whole inner mobility, are the expression and the effect of the processes of the soul. The soul is the cause of the behavior of the blood. Turning pale through feelings of fear, blushing under the influence of sensations of shame, are coarse effects of processes of the soul in the blood. But everything which takes place in the blood is only the expression of what takes place in the life of the soul. However, the connection between the pulsation of the blood and the impulses of the soul is a deeply mysterious one. The movements of the heart are not the cause, but the consequence of the pulsation of the blood." Steiner, R. (1904; GA11). The Fourfold Man of Earth. In: Cosmic Memory: Prehistory of Earth and Man. (link)