most subtle one) and their relation to the human being, from the point of view of these Esoteric Christian teachings, is as following: the "Chemical Ether": both positive and negative in manifestation and it is related to the assimilation and excretion processes; the "Life Ether": has also a positive and negative pole and it is related to the forces of propagation; the "Light Ether": the positive pole is related to forces which generate blood heat in the higher species of animal and in the human being and the negative is related to the forces which operate through the senses (passive functions of sight, hearing, feeling, tasting, and smelling); the "Reflective Ether": the medium through which thought makes an impression upon the human brain and this ether contains pictures which work as reflections of the Memory of Nature found at the World of Thought. See also Esoteric Angels Astral plane Buddhic plane Causal plane Esoteric cosmology Plane (cosmology) Odic fluid Prana Qi Physics Aether theories Aether (classical element) Luminiferous aether Timeline of luminiferous aether Fiction Ethereal Plane (a concept in Dungeons & Dragons) References External links Astral Physics and Timespace Esoteric cosmology Esoteric Christianity Theosophical philosophical concepts