Lecture IV
The third part of our etheric body is felt to fade away below into the indefinite, and though expanding widely, to disappear into the earth. These are the three parts of the etheric body which can, as disconnected one from the other, now be felt; this represents the inner sensation, the inner feeling of the etheric body; it would not present itself in this way to the seer if he were to observe the etheric body of another human being, for this is an inner experience of the etheric body. This experience again is materially modified by the existence of a fourth part of the etheric body, clearly outlined as a sort of oval, which really includes the human being within it. From the various feelings experienced as regards this part of the etheric body, a feeling is gradually acquired, an inner impression of the etheric body, as of an external form.
Cite:
GA 145/1913-03-23_02/p015 · edition English