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Chapter VII. Details from the Domain of Occult Science Man's Etheric Body When the higher principles of man are observed with clairvoyant vision, the mode of perception is never precisely the same as that which comes from the outer senses. If we touch an object, and experience a sensation of warmth, we must distinguish between that which comes from the object, that which, as it were, streams out from it, and our own psychic experience. The inner psychic experience of perceiving warmth is something distinct from the heat which streams from the object. Now let us imagine this psychic experience quite by itself without the outer object. Let us call up the experience of a sensation of heat in our soul, without the presence of any external physical object to cause it. If such a sensation simply existed without cause, it would be mere fancy. The student of occult science experiences such inner perceptions without any physical cause. But at a certain stage of development they present themselves in such a manner that he knows (it has been shown that by the very nature of the experience he can know) that the inner perception is not fancy, but is caused by a psycho-spiritual being belonging to a supersensible world, just as the ordinary sensation of heat, for example, is caused by an external physical-sense object. It is the same with the perception of colour in the supersensible world. Here we must distinguish between the colour associated with the outer object, and the inner colour-sensation in the soul. Let us call up the soul's inner sensation when it perceives a red object in the physical, outer world of the senses. Let us imagine