"The Ether is the condensation of a substance called Akasha. This substance, Akasha, is the first radiation of Mulaprakriti, which is its root or insipid and undifferentiated primordial matter.
"The Ether exists in an igneous state (Tejas). The Ether exists in a gaseous fluidic state as the origin of air (Vayu). The Ether exists in an aqueous state as the origin of water (Apas). The Ether exists in a petreous state as the origin of minerals (Prithvi).
"The scientists that place doubt in the existence of Ether have no scientific basis for their theories. Indeed, they just play with words, with terms, because instead of the term Ether they use the term “radioactivity” or a “magnetic field,” etc. So, these other terms neither take away from nor give to the reality of Ether. In any case, their doubts, analysis, and change of terms will only serve them to study that which is called Ether. Most of the time, people fight only for the question of terms of words, etc., etc. Yet, in the final analysis, what counts are the facts, and the facts are facts. Russian astronomers have discovered, with their powerful telescopes, worlds in a protoplasmic state. These protoplasmic worlds have come out from within the Ether. We can accept, by simple logical induction, that Ethereal worlds exist. Maybe some scientists will not be pleased with the term “Ethereal.” However, the term is of the least importance. The importance is the fact. Every world, before becoming protoplasmic, exists in an Ethereal state. The great Hindustani scientist Rama Prasad stated: “Everything comes out from within the Ether. Everything returns into the Ether.” If protoplasm emerges from within the Ether, then we have to accept that the Ether is in the vital depth of everything that exists." - Samael Aun Weor, Fundamental Notions of Endocrinology and Criminology