The second of Steiner's seven life-processes: the inner working by which a living being draws in the warmth of its surroundings and makes it its own.
The Warming Process in Anthroposophy is the second of the seven life-processes Rudolf Steiner names in The Riddle of Humanity (GA 170, 1916), the inner activity by which a living being takes the warmth of its surroundings and works it through into its own sustained inner heat. Distinct from breathing, warming establishes an intimate relationship with the outer warmth of the world, drawing that outer warmth across the boundary of the body and appropriating it as the organism's own. Steiner places it between breathing and nourishment among the three processes that meet life from without, and ties it through the warmth organism to the human capacity to bear an upright, self-directed inner life. In anthroposophic medicine, from Ita Wegman onward, this warmth organism is the working ground of fever and warmth therapy.
The Warming Process is the second member of the sevenfold life Rudolf Steiner describes flowing through the human organism. Where breathing takes in air, warming takes in heat: the living being meets the warmth of its surroundings and carries it inward, sustaining a proper inner temperature that no purely outer warmth could hold steady on its own. It is life appropriating outer substance as warmth.
In Steiner's Own Words
Warming requires a certain amount of warmth in the surroundings; we interact with it. Just think how impossible it would be for you to maintain proper inner warmth if the temperature of your surroundings were much hotter or much colder. If it were one hundred degrees lower your warmth processes would cease, they would not be possible; at one hundred degrees hotter you would do more than just sweat! Similarly, we need food to nourish us as long as we are considering the life processes in their earthly aspects.
What it Means Today
Steiner's warming process survives most concretely inside anthroposophic medicine, where it is named the warmth organism, the Wärmeorganismus. Ita Wegman, who founded the first anthroposophic clinic at Arlesheim in 1921 and co-wrote Fundamentals of Therapy with Steiner in 1925, treated warmth not as a thermometer reading but as a formative activity the patient performs: the same inner working by which, in GA 170, a living being takes in the warmth of its surroundings and makes it its own. A body that warms itself well is one whose I-organization has a firm grip on its substance. A body that warms itself poorly runs cold and loses that hold.
This is why the tradition reads fever differently from conventional practice. Where a fever is often something to suppress, anthroposophic clinicians since Wegman have seen the warming process taking active command, the warmth organism asserting itself against an invading substance the way Steiner says warming asserts itself against the cold of the surroundings. Warmth therapy follows the same logic in reverse: hyperthermia, warming compresses, and warming baths are used at clinics in the Wegman lineage, among them the Klinik Arlesheim and the Filderklinik near Stuttgart, to help an organism that has lost its warmth reclaim it. The Thalira reading holds the two poles together. Warming is the will-pole of life, the solar process by which what was outside is drawn in and ruled, and a person who runs perpetually cold is, in this older language, a person whose will has loosened its grip on the body it is meant to inhabit.
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