Bodily perception rests on a distinction that the German language has preserved where other languages have only one word: Koerper and Leib. The Koerper is what the doctor examines, what lies on the scales, what anatomy describes. The Leib is what you experience when you are startled, when warmth rises in shame, when you walk into a room and instantly know something is wrong. Bodily perception is perception through this lived body. It does not register sensory stimuli; it perceives atmospheres, congruences, and incongruences that remain closed to the intellect alone.
#The Distinction That Carries Everything
Whoever equates Leib and Koerper has already lost the access. The Koerper is an object among objects: measurable, localizable, describable from the outside. The Leib resists this treatment. It has no sharp boundaries; it extends atmospherically into space or contracts to a point in anxiety. Hermann Schmitz, who founded the New Phenomenology in his System der Philosophie, made this distinction the centre of an entire school of thought (cf. Schmitz, 1967, System der Philosophie, Band III.1: Der leibliche Raum). For Schmitz, feelings are not inner-psychological states but spatially poured-out atmospheres that seize a person bodily: anger grips, grief presses, joy lifts. Language has long known this; only theory forgot.
Merleau-Ponty arrived at the same insight from the French tradition: the lived body is not an object among objects but the site from which world is experienced at all (cf. Merleau-Ponty, 1945, Phenomenology of Perception). When you perceive the world, you always already perceive it bodily. There is no bodiless knowing, and whoever claims otherwise is describing an abstraction, not a real act of cognition.
#The Secret Passage
The question whether there is an access to reality that does not go through external observation runs through the entire modern philosophy. Schopenhauer found an answer in The World as Will and Representation that remains central to bodily perception. He wrote that a path from within stands open to us, a subterranean passage of sorts, a secret connection that transports us as if by treachery into the fortress that could never be taken by assault from without (cf. Schopenhauer, 1819, The World as Will and Representation). The natural sciences storm the fortress of nature from outside, with ever greater equipment. But the individual human being in their living wholeness, also as a body, is already inside the fortress that is being besieged. They have access from within, because they themselves are a piece of this nature — not only as a physical body, but as an experiencing being.
Jochen Kirchhoff (1944-2025) developed this thought further. Consciousness is something spatial, not an epiphenomenon of a material brain and not a spaceless abstraction (cf. Kirchhoff, J., 2002, Die Anderswelt). In the dialogue Outer World Inner World — The Dual Being Human (2024), he posed the question: where is the lived body? What has it to do with the physical-sensory body? Does the embodied being have a face, limbs, a form? We human beings are dual beings. What Kirchhoff meant: the lived body reaches beyond the physical body. It is the medium through which the human being participates in a greater reality — a receiving organ that can attune itself to the communications of the world, but that can also be distorted.
#What the Body Achieves in Philosophical Work
In philosophical consultation, bodily perception becomes a path of knowledge. Not as a method that one applies, but as a stance that one assumes. The philosopher listens to another person and at some point receives an impression of the other that is present in feeling and thought at once. The impression is whole-bodily: not a thought in the head and not a feeling in the gut, but both simultaneously, undivided. The work then consists in finding words for this impression that arose in the body.
One can also follow a thought bodily: where does it sit in the body? Does it have a surface, a colour, a shape? A person perceives a certain thought like a kind of bubble around them, and the work consists in touching this bubble together until it dissolves of its own accord and what lay beneath it becomes visible. What appears there is a different emotional impression, and with it come different thoughts. This is bodily perception in practice: not the analysis of a symptom, but participation in the living process of another human being through one’s own body.
#Why a Machine Has No Lived Body
In the debate around artificial intelligence and consciousness, one dimension is systematically overlooked: a machine has no lived body. It has a body in the technical sense — hardware, casing, circuits. But it has no lived body, no sensing-from-within, no bodily resonance with what it encounters. What it lacks is not merely another sensor but an entire dimension of knowing. Bodily perception cannot be digitized because it is not an information-processing operation. It is an event of participation: the body perceives because it is itself a piece of the reality it perceives. Like knows like, as Empedocles said. A machine that does not live cannot bodily know the living.
Gwendolin Kirchhoff put this point succinctly in the debate with Joscha Bach: the solution leads through bodily perception, through the return to the resumption of the perspective of interiority (cf. Kirchhoff, G., Everlast AI Debate, 2026). The question, she said, is how we position our receiving organs so that we enter the space of the communications the world has for us (cf. Kirchhoff, G., Everlast AI Debate, 2026). What bodily perception means here is not a retreat into the private, but the reopening of a path of knowledge that the fixation on external measurement has buried. You can rediscover it — not through more data, but through the return to what your body already knows.
#Body, Space, and Knowledge
Bodily perception does not stand alone. It is woven into a network of concepts that support one another. The space organ names the faculty through which the human being perceives the order encoded in space — the body as spatial organ of knowledge, not reduced to the five senses. Thinking empathy describes the stance in which bodily perception becomes a philosophical method: a thinking that feels, and a feeling that thinks. And encounter is the site where bodily perception is realized: where two people perceive each other not as objects but as bodily present beings.
#Sources
- Kirchhoff, J. (2002). Die Anderswelt: Eine Annäherung an die Wirklichkeit. Klein Jasedow: Drachen Verlag.
- Kirchhoff, J. (2006). Raeume, Dimensionen, Weltmodelle. Klein Jasedow: Drachen Verlag.
- Kirchhoff, J. & Kirchhoff, G. (2024). “Aussenwelt Innenwelt — Das Doppelwesen Mensch” [Video]. Jochen Kirchhoff — In Memoriam, YouTube.
- Merleau-Ponty, M. (1945). Phenomenologie de la perception. Paris: Gallimard.
- Schmitz, H. (1967). System der Philosophie, Band III.1: Der leibliche Raum. Bonn: Bouvier.
- Schopenhauer, A. (1819). Die Welt als Wille und Vorstellung. Leipzig: Brockhaus.