The Eternal Body Continues to Work During Sleep

True teachers are concerned not only with the waking life, but also with events during sleep. We need to leave our physical and ether bodies alone for a while so that we do not make them stupid through the activities of the astral body and eye. In arithmetic too, we must proceed in this way. A pamphlet on physics and mathematics by doctor von barval gives a good idea of how to in concrete reality into math and geometry.