Chapter II: The Nature of Humanity
The fourth member[^3] which supersensible science attributes to the human being, is one he no longer has in common with any of the manifest world around him. Indeed it is this fourth member which distinguishes him from all his fellow-creatures and marks him as the crown of the creation—or of that realm of the creation to which man belongs. Supersensible science arrives at an idea of this fourth member of the human being by pointing to an essential differentiation between the kinds of experience we have even within waking life.
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