Steiner's teaching that bone is Imagination made material, muscle is materialised Inspiration, and nerve is materialised Intuition, with the spirit raying out as the body decays.
Materialised Imagination, Inspiration and Intuition in Anthroposophy is Rudolf Steiner's teaching that the three higher modes of spiritual cognition have condensed into the solid human body: the bony system is Imagination become material, the muscles are materialised Inspiration expressing itself in movement, and the nerves are materialised Intuition. Steiner gave this in the lecture cycle The World of the Senses and the World of the Spirit (GA 134, Hannover, 31 December 1911). As bone, muscle, and nerve decay during life and after death, the spiritual cognition stored in them is released. It does not perish. It rays outward, so a person leaves fine clairvoyantly perceptible shadow pictures of himself in every place he has been, and the saved residue is gathered up and carried over toward the future Jupiter condition of the earth, becoming a building stone of the cosmos to come.
Materialised Imagination, Inspiration and Intuition names the moment in Steiner's anthropology where the spiritual and the bodily meet. The three faculties of supersensible knowing do not float above the body, they have sunk into it. Bone holds Imagination, muscle holds Inspiration, nerve holds Intuition. What looks like dead tissue is cognition asleep in matter, slowly waking as the body breaks down.
In Steiner's Own Words
We were able to show yesterday that in the bony system we have Imagination that has become material, in the muscular system Inspiration that has become material and manifests in movement, and in the nervous system materialised Intuition. When man passes through the gate of death, gradually little by little through decay or combustion or however it may be, his bony system falls to pieces. But what remains when the bony system crumbles away in the material sense is the Imagination. The Imagination is not lost. It remains in those substances which we still have in us even when we have passed through the gate of death and enter Kamaloka or Devachan.
What it Means Today
This GA 134 picture, that bone, muscle, and nerve are cognition crystallised into matter, became the seed of a working physiology in anthroposophic medicine. In Fundamentals of Therapy (1925), Rudolf Steiner and the physician Ita Wegman set out a threefold organism: a nerve-sense system centred in the head, a rhythmic system in the chest, and a metabolic and limb system in the trunk and legs. The nerve-sense pole is the bodily side of thinking, the rhythmic pole of feeling, the metabolic-limb pole of willing. GA 134 supplies the cognitive root of that map. The nerve that carries Intuition is the same nerve that grounds clear waking thought, and the limb and muscle that carry Inspiration are the same that carry the deeds of the will.
Clinics still practise from this map. The Filderklinik, founded in 1975 at Filderstadt near Stuttgart, treats patients by reading illness as an imbalance between these three poles, then strengthening the weakened one through rhythm, warmth, movement, and remedy rather than suppressing a symptom alone. Thalira synthesis: read this way, the skeleton is not a scaffold the spirit hangs upon but a finished thought of the cosmos set in calcium, so that to study one's own anatomy is, in Steiner's frame, to read a sentence the higher worlds once spoke.
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