What has already attained the image of God today, what of the human being has come to the highest level is the human sensuous body what we see of him with eyes, what we can generally perceive with our senses. However, this is not the only what the human being has. The human being has even higher members of his nature. At first, he has a member which we call the etheric body. Someone who has developed the soul organs can see this etheric body. Because of this etheric body the human being is not only a creation in which chemical and physical forces work but a living creation that lives and is provided with growth, life and the capacity of reproduction. One can see this etheric body which is a kind of archetype of the human being, if one suggests the usual physical body away with the methods of clairvoyance that are still characterised afterwards. You know that one can achieve by the usual methods of hypnosis and suggestion that if you say to anybody that here is no lamp he really sees no lamp. Thus you are able to thoroughly suggest the room away although you look into the room. That is possible if you develop enough strong willpower in yourselves, that willpower which diverts the attention from the physical body. Then you see the room not empty, but filled with a kind of archetype. This archetype has approximately the same figure as the physical body. However, it is not through and through of the same kind, but is organised thoroughly. It is not only interspersed with fine little veins and currents, but it also has organs. This formation, this etheric body causes the real life of the human being. Its colour can be compared only with the colour of the young peach-blossom. It is no colour which is included in the solar spectrum; it is approximately between violet and red. This is the second body.
Source: Rudolf Steiner – GA 053 – Origin and Goal of the Human Being: Lecture XVI: The Great Initiates – Berlin, 16th, March 1905