Lecture VII
That is the peculiarity of the Angel beings: they have no physical body and therefore no organs of the physical body such as eyes, ears, and so on. Hence they do not perceive the physical world. As their lowest being they have the etheric body and hence have a certain relationship with the plants. Their consciousness can descend as low as the plants and they can perceive them. On the other hand, where there is mineral they perceive a hollow space—just as during the devachanic condition, man, as we described, will also perceive as a hollow the space filled up here on earth by a mineral. So that wherever the physical kingdom is here, the Angels perceive a hollow space. On the other hand, their consciousness projects up to where as yet man's consciousness does not reach.