XI. Concerning Beings of the Spirit-Worlds
Clairvoyant consciousness learns to know these beings through developing a faculty for observing them by the help of the human etheric body. This clairvoyant consciousness lifts the human soul up into the world in which these beings have their field of activity and their abode. Not till the soul experiences itself in that world, do pictures or conceptions arise in its consciousness which bring about knowledge of these beings. For these beings do not interpose directly in the physical world, nor therefore in man's physical body. They are not present in the experiences which may be made through that body. They are spiritual, supersensible beings, who do not, so to say, set foot in the physical world.
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DEoriginalENGPP1922