Space is within the body as well as around it; in other words, the body is in the space and the space is in the body. This being the case, the sound of the abstract is always going on within, around and about man. Man does not hear it as a rule, because his consciousness is entirely centered in his material existence. Man becomes so absorbed in his experiences in the external world through the medium of the physical body that space, with all its wonders of light and sound, appears to him blank.