V. Human Character

This reciprocal interaction involves a continual using up of soul-forces. When in the evening a man feels tired, this means that he is no longer able to draw from his inner life a sufficiency of the forces which enable him to work on his physical and etheric bodies. When he is nearing sleep and the faculty that required the most intensive play of his spirit into the physical, the faculty of speech, begins to weaken; when sight, smell, taste and finally hearing, the most spiritual of the senses, gradually fade away, because he is no longer able to draw on his inner forces to sustain them—then we see how these forces are used up through the day.