Lateral Universal

Merleau-Ponty's alternative to the "overarching universal" of classical rationalism and of Husserl's early eidetic phenomenology. A lateral universal is acquired between cultures, philosophies, or perspectives rather than given above them; it is the convergence of two different styles toward a common meaning, on the basis of their common carnal presence as mutually enveloping dimensions of an extended system of equivalences. Developed across *Signs*' "From Mauss to Claude Lévi-Strauss" (1959) and "Everywhere and Nowhere" (1956); implicit in "On the Phenomenology of Language" and "The Philosopher and His Shadow."

Key Points

The governing text: "It is a question of constructing a general system of reference in which the point of view of the native, the point of view of the civilized man, and the mistaken views each has of the other can all find a place — that is, of constituting a more comprehensive experience which becomes in principle accessible to men of a different time and country" (Signs, "From Mauss to Lévi-Strauss," p. 120).
Not overarching: A lateral universal is not a super-universal that subsumes particular cases under a rule. It is not universal in the classical sense at all. It is universal only in the sense that it can be reached from multiple starting points through the oblique passage between them.
Carnal, not conceptual: The lateral universal is grounded in the shared carnality of embodied subjects. It is not an abstract form that subsumes different cultures; it is the possibility of cross-cultural understanding that emerges from the fact that any two embodied subjects, however culturally distant, "extend the existential system of equivalences" MP writes about in indirect-language and coherent-deformation.
Exemplary in ethnography: MP takes Lévi-Strauss' anthropological method as the model: the ethnologist must "regain possession of that untamed region of [himself], unincorporated in his own culture, through which he communicates with other cultures" (p. 119). Cross-cultural understanding is a self-transformation, not an objective triangulation.
Philosophical consequence: MP uses the lateral universal to dissolve Hegel's exclusion of non-Western thought ("Everywhere and Nowhere," Signs p. 129). The Orient is not "philosophy in itself" (Hegel's condescension) but a variant of a relationship to Being that Western philosophy has no right to claim it alone possesses.

Details

Against Overarching Universals

Classical rationalism and Husserl's early phenomenology both assumed that the universal was a structure that subsumes particular instances — an eidos, a rule, an ideal form — that could in principle be grasped independently of any particular culture. MP argues (Signs, "From Mauss to Lévi-Strauss," pp. 119–120) that this "overarching" universal is a myth. There is no view from nowhere. Even the most formal universal is acquired from within some lived context of understanding.

But MP is not a relativist. He rejects the claim that incommensurable cultures or philosophies cannot communicate. What he rejects is the idea that communication requires a common framework that stands above both parties. Communication proceeds laterally: two carnal subjects exchange perspectives through encroachment, not through subsumption under a shared rule.

The Ethnographic Model

In "From Mauss to Lévi-Strauss," the model is the anthropologist's encounter with a non-Western kinship system. The anthropologist cannot understand the system by applying Western categories directly (that would be "reducing" it to his logic); nor by treating it as impervious to understanding ("congealed in an insurmountable difference," as Lévy-Bruhl's "pre-logical mentality" had it). The only route is self-transformation: the anthropologist must "learn to speak other languages" of the body and the system of exchanges, in the way that "our social being can be dismantled and reconstructed by the voyage" (Signs, p. 120).

The result is a "general system of reference" that no participant alone could have constructed, because it is accessible only through the mutual encroachment of both positions. It is not a view of the exchange system that either the native or the anthropologist could hold in isolation; it is the form of their encounter.

Language as the Missing Case (Kee 2025)

Kee 2025 argues that language is the missing example of lateral universality — the example MP himself never gave. (Kwok-Ying Lau 2016 noted this absence and supplied his own example, the cross-cultural concept of medicine.) Kee's case is that MP's account of language in PbP and the surrounding 1949–53 lectures satisfies Lau's criteria for a lateral universal: (1) acquired through a non-objectivist method; (2) acquired through "ethnological experience" — here, linguistic-ethnological experience: the existential and then scientific encounter with foreign languages and cultures; (3) involves the testing of self (one's own language) through other (the other's language) and vice versa; (4) is comprehensive enough to incorporate the most diverse manifestations of language; (5) includes a mechanism of mutual criticism for mutual understanding.

The applicability is not a marginal extension. Kee §2 reads MP's PbP introduction as the paradigmatic case of lateral universality: the propaedeutic dialectic stages a linguistic-ethnological experience whose product is concrete-universality-of-existence. If language is the case MP never named, it is also the case that most stringently requires the lateral form, because language is the medium of phenomenological reflection itself (cf. propaedeutic-dialectic on why direct suspension of language is impossible).

The implication: the wiki's existing treatment of lateral universal — anchored in ethnography ("From Mauss to Lévi-Strauss") and history of philosophy ("Everywhere and Nowhere") — needs the linguistic third anchor. Each of the three (ethnography, history of philosophy, language) is an instance of the same form; together they constitute the field over which lateral universality operates.

Affective–Volitional Substrate (Kee 2025)

A second Kee 2025 contribution: lateral universality is primarily affective and volitional, not primarily cognitive or structural. The unity of human languages — the lateral-universal feature of human linguistic existence — is grounded in:

the expressive will (volonté d'expression) that "animates languages more than the transitory forms which it reaches" (1949–50 Sorbonne lectures qtd. Kee p. 81)
the drive (poussée) "of speaking subjects who want to understand one another" (PoW p. 50f. qtd. Kee p. 81)
the infant's "general attraction to speech" (2010a p. 9, qtd. Kee fn 16)

This is the wiki's expressive-will page. Kee's claim is that this affective–volitional layer is prior to and grounds the structural-relational reading: the universal is what motivates the encounter, not what is conceptually shared after it. The carnal register that this page captures (lateral universal "grounded in the shared carnality of embodied subjects") is correct as far as it goes; the volitional register sharpens it: what carnal subjects do across the linguistic-cultural divide is desire to understand one another, and the desire is what makes the carnality intersubjectively communicative.

The implication: lateral universality is not a purely structural-relational doctrine but a desiring-striving one. Compare expressive-will for the dedicated treatment.

Terminological Genealogy: 1949–52 Concrete Universal → 1953 Lateral Universal → 1956–59 Public Statement

Kee fn 18 supplies a refinement to the wiki's existing genealogy. Three terminological zones:

Sorbonne period (1949–52): MP uses concrete universal. Anchors: 2010a pp. 60, 326ff. (Sorbonne lectures); PoW (1950–52, published 1973) — pp. 39 (juxtaposing abstract universal with concrete or existential universal); 85 (expression as dialectic of individual and universal); 140–146.
Collège de France period (1953+): MP's preferred term becomes lateral universal. Per Kee fn 18, the 1953 lecture course on expression (SW&WE 2020b pp. 45, 50) is "to my knowledge" the first explicit use of "lateral universal" in MP's writings. This is prior to the 1954–55 Institution course and prior to the 1956 "Everywhere and Nowhere" / 1959 "From Mauss to Lévi-Strauss" public statements.
Continuing usage: the term recurs in the 1954–55 Institution and Passivity courses (pp. 55, 61; "concrete universal" returns at 108); and in various late lecture courses (2003 *Nature* p. 218; 2022 Possibility of Philosophy p. 133; 2001 Husserl at the Limits pp. 18, 55).

The terminological shift from concrete to lateral is, per Kee, a development of the doctrine, not its abandonment: the term lateral sharpens the contrast with vertical / overarching / thinking from above, and reflects MP's method "becoming more self-aware as lateral or indirect."

The wiki's existing genealogy on this page anchors the explicit-naming in the 1956 Signs essays. Kee's claim pushes the explicit-naming back to the 1953 SW&WE course — six years earlier. The claim deserves verification against the SW&WE extraction note (a Phase 8 audit task).

Earliest Formulation: The 1950 Sorbonne Course (Genealogical Middle Term)

Prior to the 1954–55 Institution course, the lateral universal's structural form is already at work in MP's 1950 Sorbonne course Phenomenology and the Sciences of Man (Ch 3). Two passages are especially relevant:

First, MP reads Husserl's late correspondence with Lévy-Bruhl as the moment Husserl abandons the dogmatic eidetic program in favor of a method that reaches across cultures:

"It is as if the imagination, left to itself, is unable to represent the possibilities of existence which are realized in different cultures... We must have an experience which is organized in such a way as to express the whole environment [Umwelt] of these primitive men. There must be a joining of effort between anthropology as a mere inventory of actual facts and phenomenology as a mere thinking through of possible societies." (Ch 3, p. 111, paraphrasing Husserl's letter to Lévy-Bruhl)

Second, MP formulates the philosophical stance that this joining of effort requires:

"Comprehension thus becomes a coexistence in history, which extends not only to our contemporaries but also to Plato, to what is back of us, and to what is before us and far distant. Philosophy is the taking over of cultural operations begun before our time and pursued in many different ways, which we now 'reanimate' and 'reactivate' from the standpoint of our present... The true place of philosophy is not time, in the sense of discontinuous time, nor is it the eternal. It is rather the 'living present' (lebendige Gegenwart)." (Ch 3, p. 109)

This is the 1950 form of what will be named "lateral universal" in 1956 ("Everywhere and Nowhere") and articulated in 1959 ("From Mauss to Lévi-Strauss"). The 1950 formulation is already complete in its structural form: non-subsumptive, non-relativist, concentric rather than hierarchical, requiring the "imagination" to be extended by facts rather than replaced by them. The vocabulary differs — "coexistence in history" in 1950, "particularities which unite" in 1954–55, "lateral universal" from 1956 — but the doctrine is continuous.

The 1950 course is therefore a genealogical middle term between MP's early Husserl-reading and the fully-articulated lateral universal of the later 1950s.

The 1954–55 Course Origin: Febvre and Lévi-Strauss

The lateral universal's earliest formulation is in the 1954–55 Institution course (merleau-ponty-2010-institution-and-passivity), where MP is already working out the structure through his reading of Febvre's Religion of Rabelais and his critique of Lévi-Strauss's "Race and History."

The formula, from the "Historical Institution" section, is striking in its compactness: "philosophy becomes the knowledge 'of particularities which unite'" ([75] supplementary). "Particularities which unite" is the 1954–55 version of what Signs will later call "lateral universal": a universality that is not a super-framework above its cases but the form of the particulars' mutual orientation toward one another.

The critique of Lévi-Strauss in the same course turns on this point. Lévi-Strauss's relativism, MP argues, is self-refuting because "by doing justice to other cultures, it attests the universality of the culture that does justice to the others" (endnote, Institution course). The relativist professes a universal knowledge of cultural particularity, and thereby reinstalls the Cosmotheoros posture that relativism was supposed to refuse. The alternative is the lateral universal: the particulars are not subsumed under a rule; they are oriented toward one another through their mutual opacity and translatability. "The absolute opacity of history, like its absolute light, is still philosophy conceived as closed knowledge" ([74 verso]).

Febvre then serves as the positive model. His study of 16th-century atheism succeeds precisely because it treats Rabelais's "mental toolbox" as irreducible to Western modernity's and translatable into it — not by abstracting a common kernel but by reaching laterally from one cultural horizon to another. "We have to show that this is an ontological horizon," MP writes at 82, correcting Febvre: the lateral connection between epochs is not a psychological similarity but a shared ontological ground — which is why Febvre's history works as philosophy and not just as historiography.

So the Signs treatment of the lateral universal via Lévi-Strauss's anthropology and Hegel's history of philosophy is a generalization of the more specific move MP had already made in the 1954–55 course via Febvre and the early Lévi-Strauss. The target is constant (cultural relativism and Hegelian closure, as the same mistake in opposite directions); the form of the alternative is constant ("particularities which unite" → "lateral universal"); the examples become richer with time.

The 1956 East-West Encounter Articulation: "Universality through Opposition"

A politically polemical attestation in *Texts and Dialogues* supplements the 1953 SW&WE first-naming and the 1959 Signs exposition. At the Venice "East-West Encounter" of March 1956 — three years after the 1953 SW&WE course and three years before the 1959 Signs essay — MP articulates the lateral universal in the sharpest political register he ever did:

"If we place ourselves on the level of what men live, it is possible, in a non-Communist country, that living men will freely express what they live, and that they will find themselves going beyond the boundaries of their class or society. . . . This would mean that the Marxists can reappropriate Hegel's famous dictum, with which you are familiar, and which seems to have been quite forgotten: truth is not a fully coined currency, and is recognizable from the outside only by the marks it carries." (East-West 1956, p. 53)

Sartre's reply in the same dialogue gives the form a name that MP partially accepts: "a universality through opposition, of a progressive universality. I believe we should initiate a rapprochement on the basis of discussions, but not hope to find a common content in some particular idea or other" (Sartre, East-West, p. 60). MP's response: he agrees with the form of "universality through opposition" but rejects Sartre's claim that this requires the prior framing of socioeconomic ideologies. For MP, "from the moment we engage in discussion as we are doing right now, we transcend the concept of ideologies" (East-West, p. 60) — discussion is the lateral universal in act, not the search for an antecedent shared content.

The 1956 East-West attestation is more political than the 1953 expression-course or the 1959 ethnographic-historiographical formulations: here MP confronts (a) Stalinist Marxism's Manichean universalism (Lukács's polemic against "bourgeois" universalism), (b) Sartre's integrative universalism (incorporation of psychoanalysis into Marxism via "totalitarian critique"), and (c) the Cold War "intellectual formula" reducing culture to ideology. MP's lateral universal is here the form of dialogue itself — the "convergence between the values of culture and those of action" (p. 54). This polemical context is implicit in the 1959 Signs essay (which alludes to "Cold War" thinking via Lévi-Strauss) but is explicit in the 1956 East-West dialogue. The 1956 articulation is therefore the most direct political register of the lateral universal in MP's career.

Applied to Philosophy

"Everywhere and Nowhere" applies the same structure to the history of philosophy. Philosophy's center is "everywhere and nowhere" (p. 128) not because every philosophy is equally true but because no single philosophy — including Hegel's — can contain the others. "Truth and the whole are there from the start, but as a task to be accomplished, and thus not yet there" (p. 128).

This lets MP dissolve Hegel's famous condescension toward Oriental thought. Hegel excluded the Orient because he held it to a Western criterion of conceptual explicitness. MP reverses the move: "Pure or absolute philosophy, in the name of which Hegel excluded the Orient, also excludes a good part of the Western past. It may be that a strict application of the criterion would spare Hegel alone" (p. 135).

Instead, MP proposes reading the Orient as a lateral variant of the Western relationship to Being. "Indian and Chinese philosophies have tried not so much to dominate existence as to be the echo or the sounding board of our relationship to being. Western philosophy can learn from them to rediscover the relationship to being and initial option which gave it birth" (p. 139). This is exactly the structure of the ethnographic encounter: understanding the other requires letting the other transform one's self-understanding, not subsuming the other under one's prior framework.

Relation to the Determinate Gap

The lateral universal is the inter-cultural form of the "determinate gap" MP names in indirect-language ("the significative intention is only a determinate gap," Signs, p. 89). Just as each expression targets its meaning across a gap that the signifier cannot close, each cross-cultural encounter targets a shared meaning across a gap that neither participant can close unilaterally. In both cases, the gap is productive: it is what makes expression — and understanding — possible.

Connections

generalizes indirect-language across cultures — universality is achieved by coherent deformation of both parties, not by subsumption
is the ethical-political form of action-at-a-distance — the right relation to other cultures is the same structural form as the right relation to politics
is the linguistic case of which Kee 2025 makes explicit — language is the missing exemplar Lau noted MP never gave; PbP's propaedeutic stages the linguistic-ethnological experience that constitutes the lateral universal of language
is grounded in the expressive will / *poussée* — the affective–volitional substrate that the structural-relational reading flattens (per Kee 2025)
is approached through the propaedeutic dialectic — the indirect, dialectical entrance is what makes the lateral universal acquirable
opens onto open horizons of language — the linguistic register of the lateral universal as horizon-not-limit
presupposes intentional-transgression — the encroachment by which I perceive another mind is the same encroachment by which I understand another culture
contrasts with Husserl's early eidetic universal — but aligns with late Husserl's "Lebenswelt" as the proper ground of any universal (see edmund-husserl)
enables MP's reading of the history of philosophy — the history of philosophy is a laterally universal field, not a linear dialectic
underwrites Lévi-Strauss' structural anthropology as MP reads it — structure is lateral, not vertical

What the Concept Does

The lateral universal does six pieces of argumentative work in MP's philosophy of history, language, and culture.

First, it names the form of universality compatible with the rejection of the view from nowhere. Classical rationalism and early Husserlian eidetics both posited a universal that subsumes particular instances under a rule graspable independently of any cultural context. MP refuses this picture without sliding into relativism: a lateral universal is acquired between perspectives through the oblique passage of mutual encroachment, not above them by ascent into a meta-position. The canonical Signs p. 120 passage names this "no longer the overarching universal of a strictly objective method, but a sort of lateral universal which we acquire through ethnological experience and its incessant testing of the self through the other person and the other person through the self."

Second, it operationalizes the propaedeutic-dialectical entrance method (per propaedeutic-dialectic). The lateral universal is not stated and applied; it is acquired through the staged movement naive → naive-universal → objectivist → relativist → unity. The 1949–52 Sorbonne psychology lectures, the 1953 SW&WE expression course, Signs' "From Mauss to Lévi-Strauss" (1959), and PbP all repeat the form: phenomenology cannot reach the lateral universal by direct postulation because the universal is what the dialectical movement converges on, not what is given before it.

Third, it grounds the carnal-affective-volitional substrate of cross-cultural understanding (per Kee 2025 / live claim claims#language-as-missing-case-of-lateral-universal). The lateral universal is "primarily affective and volitional" before it is cognitive. The expressive will (1949–50 Sorbonne lectures), the poussée "of speaking subjects who want to understand one another" (PoW p. 50f.), and the infant's "general attraction to speech" (2010a p. 9) are the existential conditions that the structural-relational reading flattens. What carnal subjects do across the cultural divide is desire to understand one another, and the desire is what makes the carnality intersubjectively communicative.

Fourth, it makes language the missing case of the doctrine. MP himself never illustrated lateral universality with the linguistic case, though Lau 2016 noted the gap and Kee 2025 fills it. Language is the paradigmatic case rather than a marginal one because language is the medium of phenomenological reflection itself: PbP's propaedeutic stages a linguistic-ethnological experience whose product is concrete-universality-of-existence. If a lateral universal can be acquired anywhere, language is the case that most stringently requires the lateral form.

Fifth, it generalizes indirect language to the inter-cultural register. Just as each expression targets its meaning across a determinate gap (per Signs p. 89: "the significative intention is only a determinate gap"), each cross-cultural encounter targets a shared meaning across a gap that neither participant can close unilaterally. The diacritical structure that operates within a single language operates between languages and cultures at the lateral-universal register. The same gap is productive at both scales.

Sixth, it dissolves Hegel's exclusion of non-Western thought without sliding into hierarchy-by-contrast. "Pure or absolute philosophy, in the name of which Hegel excluded the Orient, also excludes a good part of the Western past" (Signs p. 135). The Orient is read as a lateral variant of the Western relationship to Being, not as deficient philosophy and not as "philosophy in itself." The same form makes Lévi-Strauss's anthropology, Febvre's history, Husserl's late correspondence with Lévy-Bruhl, and PbP's reading of foreign languages all instances of one structural operation.

What It Rejects

The lateral universal is positively defined by what it pushes against. Five rival positions are explicit targets.

The primary refusal is of the overarching universal of a strictly objective method (the classical-rationalist / early-Husserlian-eidetic picture). The Signs p. 120 formulation is direct: a universal acquired "above" the particulars, supposed to subsume them under a rule graspable independently of any lived context, is the picture MP refuses. There is no view from nowhere. Even the most formal universal is acquired from within some lived context of understanding, and any pretension otherwise reinstalls a Cosmotheoros posture.

The second refusal is of cultural relativism in its self-refuting form. The 1954–55 Institution course's critique of Lévi-Strauss is sharp: relativism is self-refuting because "by doing justice to other cultures, it attests the universality of the culture that does justice to the others" (Institution course endnote). The relativist professes a universal knowledge of cultural particularity, and thereby reinstalls the Cosmotheoros posture relativism was supposed to refuse. Signs extends this: "the absolute opacity of history, like its absolute light, is still philosophy conceived as closed knowledge."

The third refusal is of Hegelian closure and the hierarchical reading of philosophical traditions. "Everywhere and Nowhere" rejects Hegel's exclusion of the Orient by reversing his criterion: "It may be that a strict application of the criterion would spare Hegel alone" (p. 135). Philosophy's center is "everywhere and nowhere" not because every philosophy is equally true but because no single philosophy — including Hegel's — can contain the others.

The fourth refusal is of Sartre's "totalitarian critique" framing of universality. At the 1956 Venice East-West Encounter, MP confronts Sartre's claim that universality requires the prior framing of socioeconomic ideologies. MP's response: "from the moment we engage in discussion as we are doing right now, we transcend the concept of ideologies" (East-West, p. 60). MP agrees with the form of "universality through opposition" but refuses Sartre's claim that this requires antecedent ideological framing. Discussion is the lateral universal in act, not the search for a prior shared content.

The fifth refusal is of the silver-bullet account of linguistic specificity (per Kee 2025 §2). Diacriticality, conventionality, sedimentation, relation to truth — none singly distinguishes language from other modes of expression. Each turns out to be either shared with other modes or contingently developable in different forms. The implication for lateral universality: language's distinctive role is not in any single feature but in the concrete open totality of features that develops historically; the lateral universal of language is therefore not derivable from any one structural axis.

Stakes

If the lateral universal is accepted, six things change for MP's philosophy and the wiki's reading of his career.

First, the relation between phenomenology and the human sciences becomes legible as a joint effort rather than a one-way derivation. Husserl's late letter to Lévy-Bruhl (Ch 3 Primacy of Perception p. 110, paraphrased) — "we must have an experience which is organized in such a way as to express the whole environment [Umwelt] of these primitive men" — admits that imagination alone cannot reach culturally distant possibilities. Phenomenology needs anthropology, and anthropology becomes philosophical when it operates laterally. This is the structural seed of the convergence-thesis between phenomenology and the human sciences (see candidate claim claims#convergence-thesis-prefigures-lateral-universality).

Second, MP's career is read as continuous on the universal-method axis from 1947 ("an element of concrete universality" in the 1947 Apology) through 1949–52 (Sorbonne concrete universal) to 1953 (SW&WE first explicit lateral universal) to 1956–59 (Venice East-West, Signs essays). The terminological shift from concrete to lateral is a development of the doctrine — sharpening the contrast with vertical / overarching / thinking from above — not its abandonment. Per Kee fn 18 / live claim claims#language-as-missing-case-of-lateral-universal, the 1953 SW&WE first-naming pushes the explicit-naming back six years from the 1959 Signs essay.

Third, the affective-volitional substrate makes the lateral universal a desiring-striving doctrine, not only a structural-relational one. Per the live claim, the expressive will and the poussée of speaking subjects who want to understand one another are prior to and ground the structural-relational reading. This connects lateral universality to expressive-will and to the late-ontology vocabulary of primordial-expression; it also connects the form of cross-cultural understanding to the form of intercorporeity (mutual desire, mutual recognition) without collapsing the two.

Fourth, language becomes the case where lateral universality necessitates an indirect reduction (per the live claim claims#language-necessitates-indirect-reduction). Language cannot be suspended without collapsing phenomenology, because language is the medium of reflection itself. The lateral universal is therefore the form of MP's phenomenological method when applied to its own linguistic condition: phenomenology is itself a propaedeutic dialectic enacting lateral universality on the medium it cannot bracket. PbP becomes the moment where lateral universality is recognized as necessary given the linguistic condition of phenomenology.

Fifth, the political register of lateral universality becomes legible. The 1956 Venice East-West dialogue's "universality through opposition" is the sharpest political articulation: against Stalinist Manichean universalism, against Sartrean totalitarian-critique integration, against Cold War ideology-reduction, MP names the form of dialogue itself as lateral-universal-in-act. This connects to Humanism and Terror's open-ontology political register (per the live claim claims#h-and-t-political-articulation-of-mps-open-ontology on wild-being): the same refusal to let "objective philosophy" close down indeterminacy operates in the political register as the refusal to let any ideological frame predetermine the form of cross-perspective understanding.

Sixth, the convergence-thesis chain (candidate claim claims#convergence-thesis-prefigures-lateral-universality) becomes a research-program seed. The 1949–52 Sorbonne convergence-thesis (phenomenology and contemporary psychology converge methodologically without absorbing each other; Wesensschau and induction as different levels of one operation) is the methodological seed-bed of which lateral universality is the cross-cultural / philosophy-of-history extension. Held at candidate because doctrinal continuity vs. parallel articulation requires sustained cross-source confirmation.

Problem-Space

The concept addresses a problem that runs through philosophy of history, philosophy of language, hermeneutics, and political philosophy: how is non-overarching universality possible — universality acquired between particulars rather than imposed above them, without collapsing into either rule-subsumption or relativist incommensurability? The problem appears in different vocabularies across the tradition.

In Husserl's late work, the problem is how phenomenology can reach the Lebenswelt of culturally distant subjects when imagination alone cannot construct the foreign. The Lévy-Bruhl correspondence stages the problem: anthropology supplies what eidetic imagination cannot. In Hegelian historicism, the problem is how Spirit's moments can be preserved in their surpassing without one historical-philosophical position becoming the criterion under which all others are measured (Hegel's Orient-exclusion is the case where this fails). In Gadamerian hermeneutics, the problem is the fusion of horizons — non-overarching mutual understanding between traditions. In Lévi-Straussian structural anthropology, the problem is how pensée sauvage operates as a coherent mode of thought irreducible to scientific categorization. In Wittgensteinian language-game theory, the problem is whether language-games can be cross-translated when the translator stands within only one. In political philosophy (the 1956 East-West register), the problem is whether dialogue between ideologies is a reduction to common content or a form-in-act not requiring antecedent shared content.

MP's reformulation: the problem dissolves once we recognize that universality is not a content shared between perspectives but the form of their encounter — the carnal possibility that any two embodied subjects can extend their existential system of equivalences toward one another through mutual encroachment, motivated by the expressive will / poussée that desires understanding. The problem-site shifts from epistemology (what is the criterion of cross-cultural truth?) to phenomenological method (what staging of dialectical experience makes lateral acquisition possible?) and to ontology (what carnal-affective structure of intersubjectivity makes lateral acquisition the form of cross-perspective understanding as such?).

The problem-space recurs across the wiki in indirect-language (the diacritical-system register of the determinate gap), propaedeutic-dialectic (the methodological staging that lateral acquisition requires), expressive-will (the affective-volitional substrate), concrete-mediation / two-historicities (the historical-cultural register of mediation that resists both subsumption and incommensurability), horizons-of-language (the anti-Wittgensteinian open-horizon register), intentional-transgression (the encroachment by which I perceive another mind), primordial-expression (the bodily ground of cross-cultural communication). The cross-source recurrence (Husserl, Hegel, Lévi-Strauss, Febvre, Sartre, Kee, Lau, Saint Aubert) and cross-vocabulary recurrence (concrete universal, lateral universal, particularities which unite, coexistence in history, universality through opposition, poussée / expressive will) make this an established THEME-cross-register problem-space already constituted on the wiki, and a candidate for a future problem-space-tagged page on "non-overarching universality."

Open Questions

Can there be a lateral universal without any shared prior field? MP's answer is: no, but the shared field is the carnal, not the conceptual. The hard question is whether carnality is specific enough to ground substantive cross-cultural understanding or only the formal possibility thereof. Per Kee 2025, the carnal substrate is layered with the affective–volitional (the *poussée*); whether this resolves the question or restates it depends on whether the poussée is itself substantive enough.
Is the lateral universal compatible with scientific objectivity? MP thinks it is ("nothing limits structural research in [the direction of universal invariants] — but neither does anything require it to postulate the existence of such invariants at the outset," Signs, p. 118). But the question of what counts as a valid lateral universal remains open.
Relation to Gadamer's "fusion of horizons": both MP and Gadamer are trying to think a non-overarching form of universality. A comparative study would be valuable. (Compare also horizons-of-language for MP's anti-Wittgensteinian formulation of the open horizon figure.)
Does the 1953 explicit-naming claim survive verification? Kee fn 18 dates the first explicit "lateral universal" to SW&WE 2020b pp. 45, 50. The wiki's SW&WE source page should be checked for a corresponding attestation; if found, the wiki's existing genealogy can be tightened. Per Rule 18, this is a passage-level local-context verification; deferred to next audit run as the targeted-raw-check on claims#language-as-missing-case-of-lateral-universal (live).

Synthetic Claims

live claim, see claims#language-as-missing-case-of-lateral-universal — language is the missing example of lateral universality that MP never gave (per Lau 2016 / Kee 2025); the affective–volitional grounding (expressive will, poussée, infant's attraction to speech) reframes lateral universality from primarily cognitive/structural to primarily affective. Sub-thesis: 1953 SW&WE is the first explicit naming, six years before Signs' "From Mauss to Lévi-Strauss" (1959).
live claim, see claims#language-necessitates-indirect-reduction — the indirect-reduction methodology that gives lateral universality its proper philosophical form is necessitated by language's dual status as worldly contingency and condition of possibility of phenomenology.
candidate claim, see claims#convergence-thesis-prefigures-lateral-universality — the 1949–52 Sorbonne convergence-thesis (phenomenology and contemporary psychology converge methodologically without absorbing each other; regional ontologies; Wesensschau and induction as different levels of one operation) is the methodological seed-bed of which lateral universality is the cross-cultural / philosophy-of-history extension. The 1949–52 → 1953 → 1956–60 → 1960 chain runs from psychology (CPP ch. 6) through "philosophy is in everything" (1953 inaugural) and the Nature lectures' philosophy-of-biology to the Signs "From Mauss to Lévi-Strauss" articulation. Held at candidate because the genealogical chain requires sustained cross-source reading to confirm doctrinal continuity rather than parallel articulation, and the universality / methodology axis-difference is real.

Sources

merleau-ponty-1964-primacy-of-perception — genealogical middle term (1950). Ch 3 (Phenomenology and the Sciences of Man) gives the earliest structural form of the doctrine under the name "coexistence in history." Key passages: p. 109 ("the true place of philosophy is... the 'living present'"); p. 110 (Husserl's letter to Lévy-Bruhl, the admission that imagination alone cannot reach primitive cultures); pp. 110–112 (the joint effort of anthropology and phenomenology). The vocabulary precedes both the 1954–55 "particularities which unite" and the 1956+ "lateral universal."
merleau-ponty-2020-sensible-world-expression — per Kee 2025 fn 18, the first explicit use of "lateral universal" in MP's writings (2020b pp. 45, 50). The 1953 expression course immediately precedes PbP and operates within the affective–volitional framing already developed in PoW. Phase 8 audit verification recommended.
merleau-ponty-2010-institution-and-passivity — the earliest formulation under the phrase "particularities which unite." Key passages: "Historical Institution" 71–82; the Febvre reading 76–82; the Lévi-Strauss critique [74 verso]–[75] supplementary ("the absolute opacity of history, like its absolute light, is still philosophy conceived as closed knowledge"); the conclusion that "philosophy becomes the knowledge of particularities which unite"
merleau-ponty-1964-signs — "From Mauss to Claude Lévi-Strauss" (pp. 114–125), especially pp. 119–121 (ethnography, the anthropologist's self-transformation, the "general system of reference"); "Everywhere and Nowhere" (pp. 126–158), especially pp. 128 ("center everywhere, circumference nowhere") and 135–139 (the dissolution of Hegel's exclusion of the Orient); "On the Phenomenology of Language" (pp. 84–97), especially pp. 87–88 (the oblique passage between languages).
kee-2025-foreign-languages-phenomenology — the linguistic case + the affective–volitional reading + the 1953 first-naming claim. Kee 2025 §2 makes language the missing exemplar Lau noted MP never gave; sharpens the lateral universal as primarily affective–volitional rather than primarily structural-relational; and supplies the 1953 SW&WE dating that pushes the explicit-naming back six years from the 1959 Signs essay. Anchors at Signs p. 120; 2010a p. 60; PoW p. 50f.; SW&WE 2020b pp. 45, 50; PbP 58. See expressive-will for the dedicated treatment of the affective–volitional substrate.
merleau-ponty-1992-texts-and-dialogues — the political-polemical attestation (1956 East-West, 1947 Apology). East-West Encounter Venice 1956 (pp. 53, 60): MP's most polemically pointed articulation of "universality through opposition" against Sartre's "totalitarian critique" and Stalinist Manichean universalism. Apology for International Conferences 1947 (p. 144): "in all dialogue there is an element of concrete universality" — the earlier 1947 vocabulary that Kee's 1953 SW&WE first-naming displaces.