Lichtung

Heidegger's late name for the Offenheit (openness) — the free open — that grants any Scheinen (showing), any Zeigen (appearing), and any An- und Abwesendes (presencing or absence). Locus classicus: "Das Ende der Philosophie und die Aufgabe des Denkens" (1964) pp. 80–82. The Lichtung is what philosophy from Plato through Hegel-Husserl has operated within but has never thought as such; bringing the Lichtung into thinking is the Aufgabe des Denkens am Ende der Philosophie — the task of thinking at the end of philosophy. The 1964 essay's closing thesis: the renamed Aufgabe is no longer "Sein und Zeit" but Lichtung und Anwesenheit.

Key Points

Definition: "Wir nennen diese Offenheit, die ein mögliches Scheinenlassen und Zeigen gewährt, die Lichtung." (GA 14 p. 80) — the openness that grants any possible letting-shine and showing.
Lichtung is not Licht. The substantive Lichtung (loan-translation of French clairière, formed on older Waldung, Feldung) goes back to verb lichten (to free, make light/open, e.g., to free a wood at one place). Adjective licht in lichten is the same word as leicht (light/free) — distinct from licht meaning hell (bright). The two adjective-senses are linguistically and substantively distinct.
Light presupposes the Lichtung, not the reverse. Light can fall into the Lichtung and let brightness play with darkness, but light never first creates the Lichtung. The light-ray crosses through the Lichtung; it does not produce it.
The Lichtung is open for everything present and absent, not only for the visible: frei für Helle und Dunkel, but also für den Hall und das Verhallen, für das Tönen und das Verklingen. Die Lichtung ist das Offene für alles An- und Abwesende.
First named at philosophy's beginning by Parmenides — but as ἀ-λήθεια (Unverborgenheit), not yet thought as Lichtung. Parmenides's gut-gerundete Aletheia (Fragment I, 28ff.) is the Ort der Stille, ruhiges Herz that gathers what first grants Unverborgenheit — das ist die Lichtung des Offenen.
Function as the Element of Sein and Denken: The Lichtung is "gleichsam das Element, in dem es Sein sowohl wie Denken und ihre Zusammengehörigkeit erst gibt" (GA 14 p. 85). It is what grants (gewährt) the belonging-together of Being and thinking, presence and perception.
The Lichtung as self-concealing: Heidegger's late-1964 deepening — "Lichtung der sich verbergenden Anwesenheit, Lichtung des sich verbergenden Bergens" (GA 14 p. 88). The Lichtung is not mere openness for presencing but openness of self-concealing presencing. See lethe-verbergung.

Details

The Anti-Light-Metaphor Argument

The 1964 essay's central philological move is to separate Lichtung from Licht. The argument runs in three steps:

Lichtung is a German loan-translation of French clairière (a forest clearing). The verb lichten in standard German means "to free, to thin out" — as in einen Wald lichten (to thin out a forest at a place). The adjective licht in lichten is the same word as leicht (light, in the sense of weight, free). It has neither linguistically nor in the matter anything in common with the adjective licht meaning hell (bright).
Although light can fall into the Lichtung and let brightness play with darkness, light does not create the Lichtung. The Lichtung is the prior open — the Freie — into which light can fall, but which light presupposes.
Therefore: any reading of Lichtung as a metaphor of light, brightness, or illumination misses the Sache. The matter is not light but the open. Aussehen (Plato's εἶδος) requires light, and light requires the Lichtung; even darkness requires the Lichtung. Die Lichtung ist das Offene für alles An- und Abwesende.

This is Heidegger's most concentrated anti-metaphor argument in the published late corpus. The marginalia at p. 80 cite Trakl's line "Ein Windstoß alte Linden lichtet" (a gust of wind clears the old lindens) as authority for the verb lichten in its non-bright sense; marginal (13) speculates the etymology may go back to vil-lichte (much-free, much-possible).

The argument does double duty. Negatively: it disarms the most common misreading of Heidegger's term (Lichtung as a "fancy word for light"). Positively: it fixes the Lichtung as the open for both presencing and absencing, both sound and silencing, both light and darkness — a topology that the light-metaphor cannot accommodate.

Lichtung as the Unthought of the Call "zur Sache selbst"

The 1964 essay arrives at Lichtung as the unthought of philosophy's modern self-understanding. Heidegger's diagnostic procedure (unthought):

Hegel ("Vorrede," 1807, Phänomenologie des Geistes) calls thinking zur Sache selbst. The matter of philosophy is for Hegel the Subjektivität that absolves itself in absolute knowing through speculative dialectic. The matter comes to Scheinen in the dialectical movement.
Husserl ("Philosophie als strenge Wissenschaft," 1910/11) calls thinking zur Sache selbst. The matter is for Husserl the absolute subjectivity of consciousness, brought to its originär gebende givenness through the Prinzip aller Prinzipien (Ideen §24).
Both methods differ as much as possible. The Sache — subjectivity — is identical, even when experienced differently.
What remains unthought in both is what makes any Scheinen possible at all: the Lichtung. Speculative dialectic needs the Helle in which the matter shines forth; the Helle needs the Offene, Freie in which to play; the Offene is the Lichtung. Husserl's originär gebende Anschauung needs that something shines forth from itself — but shining requires openness; the light-ray crosses but does not create the Lichtung. Auch Abwesendes kann nicht als solches sein, es sei denn als anwesend im Freien der Lichtung.

The point is not that Hegel and Husserl missed a fact about thinking. The point is that the call "zur Sache selbst" presupposes what it cannot itself name. Alles Denken der Philosophie, das ausdrücklich oder nicht ausdrücklich dem Ruf »zur Sache selbst« folgt, ist auf seinem Gang, mit seiner Methode, schon in das Freie der Lichtung eingelassen. Von der Lichtung jedoch weiß die Philosophie nichts. Die Philosophie spricht zwar vom Licht der Vernunft, aber achtet nicht auf die Lichtung des Seins. (GA 14 p. 82)

The light of reason (lumen naturale) is what philosophy speaks of. The Lichtung des Seins is what philosophy needs but does not attend to.

Lichtung as Aletheia, Aletheia as Lichtung

Heidegger's positive identification: the Lichtung is what Parmenides named ἀ-λήθεια. "Die 'Αλήθεια, die Unverborgenheit, müssen wir als die Lichtung denken, die Sein und Denken, deren Anwesen zu und für einander erst gewährt" (GA 14 p. 84). The Aletheia-Lichtung identification carries the whole positive content of Section 2.

But the identification is post-Parmenidean. Marginal (22) at p. 84 explicitly says: "anders als bei Parmenides" — the late-Heidegger Lichtung-thinking goes beyond Parmenides. Marginal (21) at p. 84 specifies: "alles Folgende zu »Lichtung« Gesagte gehört in den anderen Anfang – den An-Fang – erfahren zwar im Echo des Parmenides – geschicklich – jedoch zuvor gedacht in der freilich noch kaum geklärten und darum auch nicht sagbaren »Seinsfrage« in Sein und Zeit."

That is: the Lichtung-thinking belongs to the other beginning, an An-Fang experienced in Parmenides's echo but previously thought in the SuZ-Seinsfrage. This is one of the densest single statements of how the late-Heidegger work layers itself: SuZ-1927 attempted but did not bring to clarity what the 1964 essay names Lichtung; Parmenides supplied the echo but not the thought-form.

See aletheia for the Aletheia-side of the identification, including the famous self-correction (Aletheia ≠ Wahrheit). See lethe-verbergung for the constitutive role of self-concealment in the Lichtung.

The Lichtung-Austrag Marginalia

Marginal (15) at GA 14 p. 82 makes a significant deepening over the body text. Where the body says "die Lichtung des Seins," the marginal says "genauer: von der Lichtung des Austrags, der selbst lichtend-nichtend hervor-bringt / Anwesendes in seine je eigentümliche Anwesenheit."

The deepening: the Lichtung is not just of Sein but of Austrag — of "carrying-out" or "bearing-out" of the difference between Sein and Seiendes. The Austrag is itself lichtend-nichtend hervor-bringend — clearing-nihilating, bringing-forth. This is one of the most concentrated post-1964 self-corrections in the late corpus: the Lichtung is the openness in which the difference itself is borne. Cf. ontological-difference §"The 1964 Marginal Reframe" — the Lichtung is the Herkunft of the ontological difference (marginal 27).

Lichtung as Ort der Stille (Place of Stillness)

The Lichtung as the ruhiges Herz of Aletheia is named in the body at GA 14 p. 83: the Ort der Stille, der in sich versammelt, was erst Unverborgenheit gewährt. Marginal (18) gives "nämlich die 'Αλήθεια"; marginal (20) gives "d. h. die Lichtung"; marginal (19) gives "jenes" (in itself).

The stillness of the Lichtung is structurally significant. It is not a calm or absence-of-noise; it is the gathering (Versammlung) that first grants what subsequently can sound or fall silent, present or absent itself. The marginalia (2) at the title and (9) at "Bestimmung" tie this to die Stimme der Stille (the voice of stillness) and Be-Stimmung — aus der Stimme der Stille des nichtenden Nichts. The Bestimmung that the post-philosophical thinking is to ready man for (per task-of-thinking) speaks out of the voice of the stillness of the nihilating nothing. The Lichtung is the topology of this voice.

Cross-corpus: this connects to Was heißt Denken? (1951/52, GA 8) — marginal (2): "vgl. das Geheiß 1951/52." The Geheiß (commission, behest) and the Stimme der Stille are figures of the same address-structure that the 1964 Lichtung names topologically.

Lichtung as the Renamed Title of the SuZ-Task

The closing question of the essay (GA 14 p. 90): "Lautet dann der Titel der Aufgabe des Denkens statt »Sein und Zeit«: Lichtung und Anwesenheit?"

Marginal (30) revises even the closing question: "Anwesenheit (ontologische Differenz) und Lichtung — vgl. 88 Akademie München." The parenthesis "(ontologische Differenz)" identifies Anwesenheit-as-such with the ontological difference itself. The published essay's renamed task — "Lichtung und Anwesenheit" — receives a further marginal form: Anwesenheit (ontological difference) and Lichtung.

The cross-page consequence: see ontological-difference §"The 1964 Marginal Reframe" for the post-1964 identification. The wiki's task-of-thinking page records the title-substitution; the wiki's end-of-philosophy page records the diagnostic that calls for it.

What the Concept Does

Lichtung performs five argumentative tasks:

It names what philosophy operates within but does not think. The whole call "zur Sache selbst" presupposes the Lichtung; bringing the Lichtung into thinking is the post-philosophical work.
It re-grounds Greek philosophy through Parmenides, not Plato. The Anfang is not Plato's idea-as-light but Parmenides's gut-gerundete Aletheia as the Ort der Stille. Plato's Aussehen-thinking already presupposes what Parmenides named.
It topologizes the unthought. The unthought of philosophy is not a missing piece but a topology — the Lichtung's openness for presence, absence, sound, silencing, light, darkness — that no philosophical vocabulary can express because every philosophical vocabulary already operates within it.
It enables the public retraction of the SuZ-Aletheia=Wahrheit identification. Aletheia as Lichtung is not Wahrheit; Aletheia grants the possibility of Wahrheit. The SuZ-1927 translation is a Wegirren (straying) from a decisive insight (cf. footnote at GA 14 p. 87). See aletheia §"The 1964 Self-Correction."
It supplies the renamed title of the SuZ-task. Lichtung und Anwesenheit (or, in the marginal: Anwesenheit (ontologische Differenz) und Lichtung) replaces Sein und Zeit as the title of the Aufgabe.

What It Rejects

Reading Lichtung as a metaphor of light, illumination, or brightness. The philological argument at GA 14 p. 80 disarms this: licht in lichten is leicht (light/free), distinct from licht meaning hell (bright). The light-metaphor reading is the most common late-Heidegger misreading.
Reading Plato's idea-as-light as already grasping the Lichtung. Plato saw that Aussehen needs light; he did not see that light needs the Lichtung. Even darkness needs the Lichtung.
Reading Hegel's or Husserl's Sache as already thinking the Lichtung. Hegel's speculative dialectic and Husserl's intentional intuition both operate within the Lichtung but do not attend to it. Von der Lichtung jedoch weiß die Philosophie nichts.
Reading the SuZ Aletheia-Wahrheit identification as durably correct. The 1964 essay says it was a Wegirren. See aletheia §"The 1964 Self-Correction."
Reading the Lichtung as a Begriff (concept) of philosophy. Lichtung is a Sache — a matter — that demands attention, not a concept that subsumes other concepts. The Erziehung zum Denken (education in thinking, per Aristotle Met IV) requires admitting the Sache before deciding by what method (dialectical, intuitive, neither) it should be experienced.

Stakes

If Lichtung is the unthought of philosophy:

Philosophy as metaphysics has a structural blindness, not an accidental one. The forgetting of the Lichtung is constitutive of the call "zur Sache selbst" — every form of metaphysical thinking from Plato through Hegel-Husserl-Nietzsche-Marx instantiates this forgetting. The forgetting is not a mistake correctable by more philosophy; it requires another thinking.
The post-philosophical task is preparatory, not founding. task-of-thinking cannot replace philosophy with a new metaphysics of Lichtung. It can only awaken readiness (Erweckung einer Bereitschaft) for a Bestimmung whose content is undetermined.
The distinction between rational and irrational loses ground. Both Rationalität and Irrationalität are effects of an unthought ground (the Lichtung). Solange die Ratio und das Rationale in ihrem Eigenen noch fragwürdig bleiben, ist auch die Rede von Irrationalismus bodenlos. Heidegger's late thinking is therefore "outside" the rational/irrational distinction, more sober than scientific technics, abseits, ohne Effekt, gleichwohl von eigener Notwendigkeit.
The SuZ-Seinsfrage is reframed as the question of the Herkunft der ontologischen Differenz (marginal 27). The Lichtung is what grants the ontological difference; questioning the Lichtung is questioning the origin of the difference between Sein and Seiendes.

Problem-Space

Lichtung articulates a recurring philosophical problem: how does any Scheinen (showing) become possible at all, and how can thinking think that possibility from a position not already inside it? The problem appears under different vocabularies:

Plato — light as condition of Aussehen (idea); but Plato presupposes the Lichtung that grants the light.
Parmenides — Aletheia as the gut-gerundete, the ruhige Herz; the closest the Greek tradition came to naming the Lichtung as such.
Hegel — the Helle in which the matter comes to itself; the open in which speculative reflection plays. Implicit but unthematized.
Husserl — the originär gebende Anschauung and the Prinzip aller Prinzipien; presupposes the openness in which something can give itself.
Heidegger SuZ (1927) — Erschlossenheit (disclosedness), Lichtung used in nascent form, but tied to Wahrheit-translation of Aletheia. The 1964 essay says SuZ strayed from the matter at SuZ p. 219.
Heidegger 1964 — Lichtung as the prior open for everything An- und Abwesende; Anders als bei Parmenides.

The problem-space recurs in non-Heideggerian vocabularies: MP's fond / figuratifs (the rendering-visible operatives that themselves don't appear; cf. figuratifs); Derrida's différance (the prior space-time of signification); the late Wittgenstein's Lebensformen. None of these are reducible to Lichtung; they are different ways of approaching the same problem-space. The wiki tracks Lichtung as Heidegger's specific 1964 articulation and flags false-friend cautions where the problem-space tempts cross-vocabulary identification.

Connections

is named first at philosophy's beginning by parmenides — Fragment I, 28ff., as ἀ-λήθεια. Heidegger marginal (22): "anders als bei Parmenides" — the late-Heidegger Lichtung-thinking goes beyond Parmenides.
is identified with aletheia — "Die 'Αλήθεια, die Unverborgenheit, müssen wir als die Lichtung denken" (GA 14 p. 84). See aletheia for the Aletheia-side of the identification.
requires lethe-verbergung — the Lichtung is not mere openness of presencing but openness of self-concealing presencing. Verbergung is the heart of Aletheia.
is the renamed title of the SuZ-task: the 1964 essay's closing substitution Sein und Zeit → Lichtung und Anwesenheit. See task-of-thinking §"The Renamed Title."
is the Herkunft of ontological-difference — Handexemplar marginal (27) at GA 14 p. 87: the SuZ-Seinsfrage is "der verkürzte Titel für die Frage nach der Herkunft der ontologischen Differenz."
is the unthought of the call "zur Sache selbst" in Hegel and Husserl — the unthought-method that MP redeploys (in Signs "The Philosopher and his Shadow," 1959) Heidegger here turns reflexively on himself and on the modern call to the Sache.
contrasts with the Licht der Vernunft / lumen naturale — philosophy speaks of the light of reason but achtet nicht auf die Lichtung des Seins.
is the topology of the Stimme der Stille — marginalia (2) and (9) connect the Lichtung's Ort der Stille to the voice of stillness of the nihilating nothing from which Be-Stimmung speaks. Cf. Was heißt Denken? (GA 8) and the Geheiß.
is what cybernetics' Lichtungslosigkeit installs — machenschaft cites NII V: "Das Lichtungslose des Seins ist die Sinnlosigkeit des Seienden im Ganzen." The 1964 essay names Kybernetik as the Grundwissenschaft of the Lichtungslosigkeit-age. See end-of-philosophy §"Cybernetics as Grundwissenschaft."
is structurally analogous to (but not identical with) MP's figuratifs / fond / visible-invisible — the rendering-visible operatives that themselves don't appear. False-friend caution: MP's register is visible-invisible (one modality of the An-/Abwesende); Heidegger's Lichtung is the open for all modalities (Hall und Verhallen, Tönen und Verklingen, Helle und Dunkel). See figuratifs for the visible-invisible specification.
*is contestably analogous to MP's letting-be — Carbone 2004 reads MP's laisser-être as beneath the activity-passivity distinction and Heidegger's Gelassenheit as still oscillating with it; the 1964 essay's Preisgabe des bisherigen Denkens (preparatory thinking) is closer to MP's beneath-register than Carbone's contrast suggests. Open Question, not a claim.
contrasts with MP's aquatic-ontology reading of Heidegger — Knight 2024 argues Heidegger's late thought operates within a Hesiodic Earth-Sky cosmogonic imaginary; the 1964 Lichtung is post-Holzwege and arguably escapes the cosmogonic frame. Open Question.
operates within the architectonic of leitfrage-grundfrage — the Lichtung is the matter for the Grundfrage (truth/openness of Being); the Leitfrage of metaphysics has no place for it.
is in seinsgeschichtlich tension with seinsgeschichte — the Seinsgeschichte unfolds through the modes of presencing that the Lichtung grants; the Lichtung is the Wie of every Seinsgeschick, not one Geschick among others.
contrasts with ereignis — Marginal (23) at GA 14 p. 87: "»walten« bestimmt aus er-eigenen." The waltenden Lichtung is determined out of the Er-eignis. Lichtung and Ereignis are not identical but mutually constitutive in the late corpus.

Open Questions

Is the Lichtung single or plural? Heidegger names die Lichtung as if its identity across speculative dialectic, intuitive evidence, Plato's idea, Parmenides's Aletheia, and the 1964 self-concealing-Bergen were given. Derrida's différance (in Marges 1972) multiplies the prior space-time; Knight 2024 argues the cosmogonic imaginary differs between pre-Socratic physis kryptesthai philei and Plato's idea-light. Heidegger does not argue the unicity; it is assumed.
Does the philological warrant hold? The whole anti-light-metaphor argument turns on (a) Lichtung as a loan-translation of clairière and (b) licht in lichten being leicht rather than hell. Marginal (13) concedes "vielleicht aus vil-lichte" as a speculation. If the philology fails, the German word's grip on the matter loosens.
Is "Lichtung und Anwesenheit" the final form, or "Anwesenheit (ontologische Differenz) und Lichtung"? Marginal (30) revises the published essay's closing title-substitution. The wiki should preserve both forms; the further development belongs to GA 80 (München lecture; Bestimmung der Sache des Denkens manuscript), unconsulted on this ingest.
What is the relation between Lichtung and Ereignis? Marginal (23) gives "»walten« bestimmt aus er-eigenen"; the 1962 Zeit und Sein (GA 14, same volume) treats Es gibt and Ereignis as paired thematics. The 1964 closing question — Was spricht im Es gibt? — refers back to Zeit und Sein. Cross-corpus work needed.
Does MP's figuratifs-program track the same problem-space at a different topology? The visible-invisible structure of MP's figuratifs looks like a regional case of what Lichtung names topologically; but MP doesn't name Hall und Verhallen / Tönen und Verklingen in the figuratif register. The cross-author claim would require careful sorting.

Sources

heidegger-1964-end-of-philosophy — locus classicus. Definition at GA 14 p. 80; philological-anti-light argument at p. 80; Auch Abwesendes-formula at p. 80; the philosophy-knows-nothing-of-it formulation at p. 82; the Aletheia-Lichtung identification at p. 84; the Element-formulation at p. 85; the self-concealing-Bergen formulation at p. 88; the renamed-title closing at p. 90. Plus 30 Handexemplar marginalia — most importantly (15), (21), (22), (23), (27), (30) — that perform later self-corrections on the body text.
heidegger-1961-nietzsche-ii — Lichtungslosigkeit mention via machenschaft page: "Das Lichtungslose des Seins ist die Sinnlosigkeit des Seienden im Ganzen." Cross-source corroboration of Lichtung as the load-bearing late-Heidegger term.