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Lacan Seminar 1966 object a

The Seminar of Jacques Lacan, Book XIV: The Logic of Phantasy (alt. translation)

Jacques Lacan

by Jacques Lacan

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Synopsis

Seminar XIV, delivered at the École Normale Supérieure across the academic year 1966–1967 under the title "The Logic of Phantasy," undertakes the rigorous formalization of the formula $\barred{S} \lozenge a$ — the subject in its relation to objet petit a — by grounding it in set theory, Boolean logic, topology, and a series of structural operators Lacan calls "the logic of writing." The central question is: what logical status must be given to the phantasy, understood not as an imaginative production but as the fundamental structural link between the divided subject and the object-cause of desire? To answer it, Lacan moves through a sequence of interlocking demonstrations: the self-referential impossibility of any universe of discourse (no signifier can signify itself, hence no metalanguage), the mapping of alienation onto De Morgan's logical transformations of the Cartesian cogito ("either I am not thinking or I am not"), and the consequent installation of the big Other as the necessary but untenable locus of being. He then turns to the formal properties of the golden number (objet petit a as the "mean and extreme ratio") to argue that the sexual act structurally cannot close upon itself — there is no sexual relation at the level of the signifier — and that sublimation, acting-out, passage à l'acte, and perversion (masochism in particular) are the structural variants generated by this irreducible incommensurability. The seminar ends by situating analytic interpretation within a logic of truth rather than mere discourse-effect, and by insisting that desire, as sub-product of demand and lack, can never be confused with jouissance.

Distinctive contribution

Seminar XIV makes a distinctive contribution to the Lacanian corpus precisely because it constitutes the most sustained attempt to give a strictly logical — and not merely rhetorical or clinical — foundation to the formula of phantasy. Where Seminar XI (The Four Fundamental Concepts) approached the object a primarily through the drives and transference, and where Seminar XIII (The Object of Psychoanalysis) had begun to open the topological dimension, Seminar XIV takes the further step of showing that the phantasy is not simply a clinical datum but a logical necessity derivable from the axiom "no signifier can signify itself." The seminar thus represents the hinge between Lacan's earlier structural-linguistic phase and his later formalization in terms of jouissance, the matheme, and topology: the concept of jouissance-value (introduced here in explicit dialogue with Marx's exchange-value and use-value) anticipates Seminar XVII's discourse theory, while the formalization of objet a through the golden ratio anticipates the mathemes of Seminar XX.

A second distinctive contribution is the systematic articulation of the quadrangle: repetition, the act, acting-out, passage à l'acte, and sublimation are set into a four-term structural table organized around the function of repetition and the status of the sexual act as foundational act. No other seminar in the corpus deploys this table with the same architectonic insistence, and it is here that Lacan gives the fullest account of sublimation as a structural position (not merely an energetic concept) — arguing against Hartmann's ego-psychology and redefining sublimation in relation to identification with the feminine position and the "gift of what one does not have." Finally, the seminar's treatment of masochism — reading Bergler's "oral neurosis" and Reik's analyses against the grain to show that the masochist assumes the position of objet a (remainder/waste) under contract with the big Other — constitutes the most concentrated structural account of perversion as logical variant of the sexual act's impossibility found anywhere in the primary corpus.

Main themes

  • The impossibility of a universe of discourse: no signifier can signify itself
  • Alienation as forced choice and the logic of the 'either I am not thinking or I am not'
  • The Cartesian cogito reread through De Morgan, set theory, and the barred Other
  • Objet petit a as the golden number: incommensurability and the failure of the sexual relation
  • The quadrangle of repetition, the act, acting-out, passage à l'acte, and sublimation
  • Jouissance-value as structural analog of exchange-value: the entry of Marx into the logic of desire
  • Masochism and perversion as logical variants of the subject's relation to objet a
  • Topology (Möbius strip, torus, projective plane, cross-cap) as real support of the logic of the subject
  • Writing (l'écriture) as operator distinct from speech: the condition for formalizing the logic of phantasy
  • Feminine jouissance as irreducible remainder that escapes both the sexual act and psychoanalytic theory

Chapter outline

  • Seminar 1: Wednesday 16 November 1966 — p.1-12
  • Seminar 2: Wednesday 23 November 1966 — p.13-16
  • Seminar 3: Wednesday 30 November 1966 — Jacques-Alain Miller on Boolean Logic — p.25-30
  • Seminar 4: Wednesday 7 December 1966 — p.31-43
  • Seminar 5: Wednesday 14 December 1966 — p.44-46
  • Seminars 5–7: The Klein Group and the Logic of Alienation — p.47-70
  • Seminar 7: Wednesday 11 January 1967 — Cogito, Id, and the Logic of Phantasy — p.67-79
  • Seminar 8: Wednesday 18 January 1967 — The Other, the Cogito, and the Dream — p.80-95
  • Seminar 9: Wednesday 25 January 1967 — Castration and Objet a — p.92-103
  • Seminar 10: Wednesday 1 February 1967 — Cogito ergo Es; Jakobson Visit — p.104-109
  • Seminar 11: Wednesday 15 February 1967 — The Act, Passage à l'acte, and Repetition — p.110-125
  • Seminar 12: Wednesday 22 February 1967 — Acting-out, Sublimation, and the Field of the Other — p.126-134
  • Seminar 13: Wednesday 1 March 1967 — The Golden Number and the Sexual Act — p.135-145
  • Seminar 14: Wednesday 8 March 1967 — The Sexual Act, Repetition, and the Analyst's Place — p.146-162
  • Seminar 15: Wednesday 15 March 1967 — André Green's Presentation — p.160-162
  • Seminar 16: Wednesday 12 April 1967 — There Is No Sexual Act — p.163-175
  • Seminar 17: Wednesday 19 April 1967 — Jouissance-Value, the Unary Stroke, and the Sexual Dyad — p.176-201
  • Seminar 19: Wednesday 10 May 1967 — Masochism and the Logic of Rejection — p.202-216
  • Seminar 20: Wednesday 24 May 1967 — Castration, the Sexual Act, and the Object — p.217-226
  • Seminar 21: Wednesday 31 May 1967 — Jouissance, the Slave, and the Body — p.227-238
  • Seminar 22: Wednesday 7 June 1967 — Structuralism, the Body, and the Sexual Act — p.239-250
  • Seminar 23: Wednesday 14 June 1967 — Perversion, the Schema, and the Sexual Act — p.251-262
  • Seminar 24: Wednesday 21 June 1967 — Truth, Interpretation, and Desire — p.263-276

Chapter summaries

Seminar 1: Wednesday 16 November 1966 (p.1-12)

Lacan opens the year by announcing the five guiding points of his enterprise: the logical articulation of the formula of phantasy ($\bar{S} \lozenge a$), its relation to the signifier, the problem of the Universe of Discourse, the function of writing, and Freud's remarks on thinking, language, and the unconscious. He begins immediately with topology, revisiting the projective plane and cross-cap: the first cut on the bubble that the signifier establishes in the real yields the objet a as an object that has a fundamental relation to the Other from the very beginning. The subject only arises with the cut, not before it; prior to that cut there is no subject, only the play of the signifier on the head/tails of the Other's discourse. The cut also demonstrates the topological identity of one circuit and two circuits — a property that will recur throughout the year in the discussion of repetition.

Lacan then turns to the axiomatic foundation of the whole project: it is of the nature of every signifier not to be able to signify itself. He introduces this in the context of set theory's axiom of specification — a set can only be defined from outside itself — and uses this to demolish the 'reduced language' theory of the unconscious advanced by Perelman and others. The formula 'the unconscious is structured like a language' must be taken literally, not as a proportionality between signifiers; the very notion of 'reduced language' imports the structure of analogy into a relation that is irreducibly one of substitution. The key result is that there is no Universe of Discourse: the One that results from the closure of the signifying chain is always an additional, uncountable signifier — precisely what Lacan will later identify with the unary stroke and the objet a.

Key concepts: Objet petit a, Topology, Signifier, Unconscious, Splitting of the Subject, The big Other Notable examples: Projective plane / cross-cap; Set theory's axiom of specification; Perelman's theory of metaphor

Seminar 2: Wednesday 23 November 1966 (p.13-16)

This session introduces writing (l'écriture) as a theoretical operator distinct from speech. Lacan's argument is that the paradox of writing — 'the smallest whole number not written on this board' — demonstrates that there is no metalanguage: to write that one is saying something is not the same operation as saying it. The paradox is not merely a curiosity but demonstrates that there is a close structural relation between the apparatus of writing and logic as such, and that the new developments of modern (symbolic) logic are inseparable from operations of writing.

The significance for the logic of phantasy is immediate: the formula of the phantasy can only be articulated as writing, not as speech. The self-referential paradox illustrates the constitutive gap that any axiom about the universe of discourse introduces within that very universe — the moment one writes the axiom, it falls under the axiom's own scope and generates an excluded element. This is the formal demonstration of 'there is no metalanguage' as a concrete consequence of how writing differs from saying, not a mere aphorism.

Key concepts: Language, Truth, Signifier, Unconscious, Matheme Notable examples: 'The smallest whole number not written on this board' paradox; Russell's paradox; Mallarmé's absolute Book

Seminar 3: Wednesday 30 November 1966 — Jacques-Alain Miller on Boolean Logic (p.25-30)

This session is largely given over to a presentation by Jacques-Alain Miller on Boolean logic, which Lacan introduces and then briefly endorses. Lacan contextualizes the publication of his Écrits, defends the seminar format against structuralism as fashion, and gestures toward the theoretical stakes of the year's work: the repetition of the unary stroke as grounding the division of the subject. He draws the analogy between transference and the Eliza machine — an electronic device that simulates a listener — to show that the functioning of the signifier need not be conceived as the flower of consciousness.

Miller's demonstration, as Lacan glosses it, establishes by starting from Boole that the elision of the signifier from its own function — represented by the (−1) that Boole excludes — is the place where what Lacan is trying to articulate is structurally situated. Lacan endorses this as perfectly convergent with his own starting point: that meaning and its origin in the signifier are logically prior to and irreducible by classical consciousness-based logic. The (-1) will later resurface in the formalization of the castration complex.

Key concepts: Signifier, Unconscious, Repetition, Language, Knowledge Notable examples: Poe's game of odds and evens; Boole's logic and the (-1); Miller's Boolean demonstration

Seminar 4: Wednesday 7 December 1966 (p.31-43)

Lacan consolidates the Boolean groundwork and moves to the question of negation and its logical levels. He insists that the relation of truth to the signifier is not the same as the relation of truth to meaning, and that analytic verification passes along the direct line of the signifier's operation — not through the idealist contemplation of a founding Being. The session stakes out the claim that Bertrand Russell is more politically engaged than Maritain precisely because formal logic is more closely linked to the real than any philosophy of Being.

Most substantively, Lacan announces that negation must be distinguished at four different logical levels — classical non-contradiction, the 'me-' of méconnaissance, the 'not-without' of implication, and the negation of being/thinking — and that Freud's claim that the unconscious knows no contradiction has been repeated uncritically because this multi-level logic of writing has never been properly examined. This is a programmatic announcement: the logic of phantasy will require these four levels to be rigorously separated. The session also shows how logical negation must be handled in written form (De Morgan's laws as symbolic operations) and that only at the level of writing can one be certain that something is being said at all.

Key concepts: Language, Truth, Unconscious, Signifier, Metaphor Notable examples: De Morgan's laws; Aristotelian predicate logic; Freud on the unconscious and contradiction

Seminar 5: Wednesday 14 December 1966 (p.44-46)

A transitional session in which Lacan addresses the reception of the Écrits and reflects on the link among his essays as a thread running from the Mirror Stage through the Subversion of the Subject. The session restates the founding axiom — the signifier cannot signify itself — and poses the contrast between this structural impossibility and the question of identity that applies to the subject. The session marks the hinge between the logical groundwork of the first weeks and the Klein group formalization that begins in Seminar 5/6.

Key concepts: Signifier, Subject, Splitting of the Subject Notable examples: Mirror Stage; Subversion of the Subject (Écrits)

Seminars 5–7: The Klein Group and the Logic of Alienation (p.47-70)

Across three sessions Lacan deploys the Klein four-group as a formal cell for the logic of metaphor, the subject's relation to the Other, and ultimately for the structure of alienation. The Klein group has four elements and each is linked to the three others; what is crucial is that there is no privileged centre and that the structure supports proportional relations (a/b = c/t) as only one of many possible applications. For Lacan, the formula of metaphor — a signifier S substituting for S' — has exactly the structural cell of the Klein group; what results from this substitution is a signified effect that is a truth-effect, not a meaning-effect in the ordinary sense. Interpretation in analysis is thus formally derivable as the operation of the additional signifier (the 'one too many') within the chain.

The session on alienation introduces the fundamental logical operation that will anchor the whole year: the vel of alienation, formalized as the De Morgan transform of the Cartesian cogito. 'Either I am not thinking, or I am not' is not a simple exclusive disjunction (aut) nor an inclusive one (vel); it is a third operation — christened omega — in which the conjunction of two true propositions yields a false result, forcing the subject to lose one term whatever it chooses. This operation is aligned with the forced choice of alienation: the subject goes toward the 'I am not thinking' because choosing 'I am not' means it disappears altogether. The result is that what is preserved is a grammatical structure — the Es, the Id — as the logical residue of the fallen I.

Lacan reads the Cartesian cogito through this lens: the 'ergo sum' is a refusal of the hard path from thinking to being. The I that grounds itself on cogitation installs the Other in the place of Being (Descartes' divine guarantee), but once this Other is untenable — as it is in modernity — what remains is only the empty set: the I am is constituted by not containing any element. The Id is thus the grammatical remainder of discourse once 'I' is subtracted; it is not a bad ego or a primitive subject but the logical support of what is displaced in alienation.

Key concepts: Alienation, The big Other, Signifier, Splitting of the Subject, Unconscious, Metaphor Notable examples: Klein four-group; De Morgan's laws applied to the cogito; Descartes, Meditations and Discourse on Method

Seminar 7: Wednesday 11 January 1967 — Cogito, Id, and the Logic of Phantasy (p.67-79)

Lacan returns from the holiday break to make good on his promise to formalize alienation through De Morgan's formula. The vel of alienation — 'either I am not thinking or I am not' — is shown to be the proper logical frame for grasping the subject of the unconscious. The key move is to show that this is not a symmetrical choice: the forced displacement toward 'I am not thinking' leaves as its residue the entire grammatical structure of the Es (the Id), which Lacan identifies as 'all the rest of grammatical structure, not I.' The truth of alienation only shows itself in the lost part, which is none other than the 'I am not.'

Freud's analysis of 'A Child is Being Beaten' is read as the paradigmatic illustration: the moment in which the subject would have to say 'I am being beaten' is precisely the moment that is foreclosed — the I, as such, is excluded from the phantasy. The surprise that characterizes analytic interpretation is grounded in this 'I am not': the laughter of the witticism is the laughter of the subject surprised by its own division. This is why the formations of the unconscious — jokes, dreams, slips — always carry this dimension of surprise as their revelatory character.

Key concepts: Alienation, Unconscious, Splitting of the Subject, Fantasy, The big Other, Repetition Notable examples: Freud, 'A Child is Being Beaten'; Descartes, cogito; Witticism as formation of the unconscious

Seminar 8: Wednesday 18 January 1967 — The Other, the Cogito, and the Dream (p.80-95)

Lacan articulates alienation as the pivotal concept of the year and situates the Freudian discovery in terms of it. The I that Freud discovers is not the I of idealism but the I of grammatical structure: Freud's dream thoughts (Traumgedanken) appear to violate logic only at first approach; in fact, they are organized by a different logic — one in which contradiction is not absent but operates at a different level than in classical predicate logic. The I am of the Cartesian I think is grounded in the Other, but once the Other's existence becomes untenable — as Descartes' own text shows when it resorts to the divine guarantee — the cogito collapses into the empty set.

Lacan reads St. Anselm's ontological argument not as a proof of God's existence but as a demonstration of the necessity of the Other as locus of the word: one cannot articulate anything in the field of speech without installing oneself in the Other's locus. He then turns to Freud's analysis of the dream and the function of gaps (Lücken, Unterbrechungen) in the dream account — showing that these gaps must be reinstated as part of the dream text itself. The dream of the Volksgarten restaurant exemplifies the logic of the phantasy: the lacuna designates the disjunction between the I think and the I am, between the grammatical ego dispersed across the dream-thoughts and the subject of desire.

Key concepts: The big Other, Alienation, Unconscious, Subject, Fantasy, Splitting of the Subject Notable examples: St. Anselm, Fides quaerens intellectum; Freud, Interpretation of Dreams (Volksgarten dream); Choang-tsu butterfly dream

Seminar 9: Wednesday 25 January 1967 — Castration and Objet a (p.92-103)

Lacan now brings castration into the argument. The objet a as cause of desire dominates everything the subject can circumscribe as desire; this desire is marked by lack; and castration is the structural mechanism through which the Other — specifically the Mother as the initial locus of the big Other — appears as castrated, producing the horror that installs the subject in relation to lack. Castration is thus not a biographical trauma but a logical condition: it is waking up to the fact that everything of sexuality realized in psychic life is marked by a sign of lack.

The session also pursues the Freudian dream-logic further: Lacan asks what guarantees that waking is not itself just another screen against desire. The Choang-tsu butterfly paradox is read not as a simple inversion of waking and dreaming but as pointing toward the structural impossibility of a stable locus of the real outside the subject's constitutive fantasy. The question of 'awaking' (l'éveil) is left in suspense as a question about the subject's relation to what frames reality.

Key concepts: Castration, Objet petit a, Desire, The big Other, Fantasy, Phallus Notable examples: Freud on castration anxiety; Choang-tsu butterfly dream

Seminar 10: Wednesday 1 February 1967 — Cogito ergo Es; Jakobson Visit (p.104-109)

Lacan announces but does not deliver the lecture he had prepared — on the formula cogito ergo Es, a play on the homophony between the Latin es and Freud's das Es. In the event, the session becomes an occasion for a dialogue with Roman Jakobson, who is visiting Paris. Lacan poses the question of whether Jakobson's linguistics, given its consequences, requires a radical change in the position of the subject among those who follow it. Jakobson defers a response. The session is largely procedural but the theoretical stake is significant: the cogito ergo Es formula — which Lacan says has a logic that is 'totally unprecedented' and which he has not yet named — condenses the whole year's argument: the Cartesian cogito, rethought through the Es/Id as the grammatical remainder of the fallen I, reinstates the Freudian object (not thought-system) whose status is identical with structure insofar as structure is real.

Key concepts: Unconscious, Subject, Signifier, Language Notable examples: Roman Jakobson; Cogito ergo Es formula

Seminar 11: Wednesday 15 February 1967 — The Act, Passage à l'acte, and Repetition (p.110-125)

Lacan turns to the structural table of repetition and its four terms: repetition itself, the act, passage à l'acte, and acting-out. The key claim is that the act is founded on repetition: not as motor discharge or reflex but as the reduplication that occurs when an operation becomes a signifier — when 'I walk' becomes an act by being said as such. The act is the double loop of the signifier; it is, as close as possible to a signifier signifying itself (though this remains impossible). The subject in the act is equivalent to its signifier, yet remains divided.

The topological formalization is introduced through the double loop (inverted figure-eight) and the Möbius strip: the act is the cut in the centre of the Möbius strip that transforms it, in a single stroke, into a double loop. This gives the act its foundational character for the subject. Passage à l'acte corresponds to the alienating choice that goes to 'I am not thinking' (abandoning the subject in the act to the full field of the Es); acting-out corresponds to the impossible other term of the alienating alternative, manifesting something of the eliminated Other in the form of a truth-signal. Regression in the analytic sense is retheorized as the return-effect of this topological structure — not a temporal regression to earlier stages but the retroactive effect intrinsic to any signifying incidence.

Key concepts: The Act, Repetition, Topology, Alienation, Splitting of the Subject, Unconscious Notable examples: Möbius strip; Double loop / inverted figure-eight; Freud on regression (topical, temporal, formal)

Seminar 12: Wednesday 22 February 1967 — Acting-out, Sublimation, and the Field of the Other (p.126-134)

The session consolidates the structural table and introduces the fourth term: sublimation. Alienation is restated as the elimination of the Other as a closed, unified field — there is no universe of discourse — and this elimination produces, as its structural effect, a disconnected or 'eliminated' Other whose residual presence in the field generates the various forms of the act. Acting-out is defined as the manifestation, in the field of this eliminated Other, of something in the form of a truth-signal; it is correlative to the symptom as manifestation of truth, but not identical with it.

Sublimation is placed at the fourth vertex of the quadrangle alongside repetition, passage à l'acte, and acting-out. Lacan argues against Hartmann's energetics framework for understanding sublimation and insists on the Freudian zielgehemmt (aim-inhibited) drive as the proper entry point. Sublimation is the conceptual locus for the satisfaction (Befriedigung) that underwrites repetition. The key proposition: the act is a signifier, and the sexual act is the paradigmatic case whose repetition traces the oedipal scene. The incestuous sexual act (a boy who has slept with his mother) is invoked as clinical evidence that certain sexual acts install the subject in an irreversible structural position — a point that ego-psychology cannot articulate because it lacks the concept of the act as signifier.

Key concepts: Sublimation, Repetition, The Act, Alienation, The big Other, Oedipus Complex Notable examples: Hartmann's energetics; Fenichel's 'Neurotic Acting-out'; Sexual act and the oedipal structure

Seminar 13: Wednesday 1 March 1967 — The Golden Number and the Sexual Act (p.135-145)

Lacan introduces the golden number (φ) as the mathematical support for the objet a, having prepared the ground across the previous sessions. The mean and extreme ratio — the relationship of the smaller to the larger is equal to the larger to their sum — defines a magnitude that is incommensurable with the unit. Lacan had already cited this in the Écrits ('The Meaning of the Phallus', p.693) in connection with the phallus as the ratio of desire; the seminar now formalizes this reference. The key properties are set out: 1+o = 1/o; 1−o = o²; and the recursive series of even and odd powers of o both converge but never sum to a whole rational number.

This mathematical structure is then applied directly to the question of genital satisfaction and the sexual act. Both boy and girl enter the oedipal structure first as child — as product. The sexual act, insofar as it aims at the One of union, is necessarily measured against this incommensurable remainder. The session culminates in an analysis of the relation between identification with the feminine position and sublimation: it is always through identification with the woman that sublimation produces the appearance of creation, because the woman creates by providing what she does not have (the phallus as the symbol of withdrawn jouissance). Masculine jouissance is defined by the 'fainting' (aphanisis) of the subject at the phallic moment — the return of the little death — which grounds the male illusion of pure subjectivity and the denial of castration that constitutes idealist thinking.

Key concepts: Objet petit a, Phallus, Sublimation, Jouissance, Castration, Fantasy Notable examples: Golden number / mean and extreme ratio; 'The Meaning of the Phallus' (Écrits, p.693); Dürer, cathedrals (as examples of aesthetic idealization of φ)

Seminar 14: Wednesday 8 March 1967 — The Sexual Act, Repetition, and the Analyst's Place (p.146-162)

Lacan returns to the sexual act as the paradigmatic act, the one whose repetition founds the oedipal scene and whose structure is irreducibly marked by the third element (phallus, mother, Other). He engages critically with ego-psychological accounts of genital maturity — particularly the notion that mourning an object within a decent timespan is a sign of maturity — and shows that the theory of the genital stage is systematically silent on the mourning the mature subject leaves behind, suggesting this silence itself is structural.

The session introduces the analytic bed as a structural operator: the bed is the locus of the Other of the sexual act, but the analytic situation cannot become the sexual act — it maintains the sexual as an empty field. The segment of the objet a (the small o) on the structural schema has the same relation to the O of the sexual Other as the O of truth has to the O of alienation. The analyst necessarily occupies the position of objet a, which grounds a legitimate anxiety in the analyst — this is not a failure of technique but a structural consequence of the logic of phantasy. Claudel's Sygne de Coûfontaine is invoked as an example of a sexual act consummated in hatred, raising the question of whether hatred deprives the act of its structural implications.

Key concepts: Objet petit a, The Act, Jouissance, Fantasy, The big Other, Castration Notable examples: Claudel's trilogy (Sygne de Coûfontaine); The analytic bed as structural locus

Seminar 15: Wednesday 15 March 1967 — André Green's Presentation (p.160-162)

This session is largely given over to a presentation by André Green. Lacan provides a brief introduction reflecting on the civilizing function of psychiatric doctrine (apropos his friend Henri Ey's organodynamism) before ceding the floor. His closing remarks thank Green and note that the presentation has usefully posed questions about Lacan's relation to Freud and opened questions that will be taken up subsequently. The session has no substantive theoretical development of its own but marks a moment of genuine dialogue.

Key concepts: Knowledge, Truth Notable examples: André Green's presentation; Henri Ey's organodynamism

Seminar 16: Wednesday 12 April 1967 — There Is No Sexual Act (p.163-175)

After the Easter break, Lacan opens with the claim — partly eristic, partly programmatic — that 'there is no sexual act.' This is presented not as a personal assertion but as what the unconscious itself articulates: the unconscious ceaselessly cries that there is no sexual act, which is why psychoanalysts tend to suppress this dimension. The point is that it is because there is sexuality that there is no sexual act; the sexual act fails to inscribe the subject as sexed in the same way a signifier inscribes a subject in the chain.

The session introduces the formal apparatus of the triple articulation: the small o (golden number), the first value One (the measurement standard for o), and a second value One (the Other). The relation 1+o = 1/o is deployed to map the structure of what happens in the attempt to reintegrate objet a into the universe of language — a contradictory and structurally impossible but arithmetically fruitful enterprise. Lacan draws on Lévi-Strauss's elementary structures and Marx's value theory to show that at the source of what redoubles value in the unconscious is something that plays the role of exchange-value with respect to use-value — and this is named jouissance-value. Capitalism is said to be necessary for this structural choice to be revealed as such.

Key concepts: Jouissance, Objet petit a, The big Other, Surplus-jouissance, Signifier, Lack Notable examples: Lévi-Strauss, Elementary Structures of Kinship; Marx, Capital (value theory); The golden number triple articulation

Seminar 17: Wednesday 19 April 1967 — Jouissance-Value, the Unary Stroke, and the Sexual Dyad (p.176-201)

This session elaborates the concept of jouissance-value and its origin in the lack inaugurated by castration. The prohibition of autoeroticism brings to bear on a precise organ the element of unit that inaugurates the economy of exchange in the speaking being. The woman takes on her value as object of jouissance through this operation; jouissance passes from subjective (he enjoys) to objective (he enjoys something), sliding toward possession — and this is the structural ground of the 'male fiction' that one is what one has.

Lacan then introduces the S(Ø) — the signifier of the barred Other — as the mirror function of the One in the field of the Other, and locates it as the condition for all identification, particularly identification to the ego ideal (whose stroke is inscribed in the Other). He draws a distinction between identification, repetition, and the (impossible) sexual dyad, noting that Aristotle's Categories include every predicate except sex — possibly because the quiddity of sex is lacking; there is perhaps only the phallus. The session also engages Plato's Sophist to ground the formal relation between the One (sexual union) and the field of the Other. The question of Oedipus and Jocasta is raised: Jocasta is 'the lie incarnated in the sexual act' — she represents the structural dissimulation of jouissance that is a condition of any sexual union.

Key concepts: Jouissance, Surplus-jouissance, Phallus, Objet petit a, The big Other, Castration Notable examples: Plato, Sophist; Aristotle's Categories; Oedipus and Jocasta; S(Ø) formula

Seminar 19: Wednesday 10 May 1967 — Masochism and the Logic of Rejection (p.202-216)

After an administrative announcement (a strike will cancel the next session), Lacan engages critically with Edmund Bergler's theory of 'oral neurosis' and masochism. Bergler's reduction of masochism to an aberration of pleasure — 'injustice collectors' who enjoy being rejected — is shown to rely on a moralistic framework that confuses the structural position of the subject with biographical anecdote. Lacan insists on a strict logical articulation of masochism: it cannot be reduced to the enjoyment of pain. What masochism designates is the subject assuming the position of objet a — specifically as remainder, waste, cast-off — within a contractual scenario.

The big Other appears in masochism as the locus of a regulating word: the masochist contracts with the Other to receive punishment, thereby installing the Other as guarantor of the scenario. This is structurally distinct from sadism, where the subject imagines itself as the servant of radical evil (Lacan reads Sade and Reik alongside Bergler). The One of sexual union is left intact in perversion — no partition is established in it — and the subject described as perverse comes to find jouissance at the level of this irreducible objet a. The session also connects the unconscious with politics: the structural logic of rejection (being offered and rejected) is the same logic that governs what binds and opposes men — 'the unconscious is politics.'

Key concepts: Masochism, Objet petit a, The big Other, Jouissance, Perversion, Fantasy Notable examples: Bergler, La névrose de base; Reik on masochism; Sacher-Masoch; Vietnam War as political analogy

Seminar 20: Wednesday 24 May 1967 — Castration, the Sexual Act, and the Object (p.217-226)

Lacan criticizes the proliferation of subjective entities in ego-psychology (ego, ego ideal, superego, id, self) as entities that are always inadequate once the function of the subject as 'what a signifier represents for another signifier' is properly understood. The subject is not an autonomous entity; its only consistency comes from the signifier. He then returns to the structure of the sexual act and the function of detumescence: castration complex means that detumescence does not suffice to constitute the object of the act; there is an object that is not given in the reality of the partner but is closer to a structural function.

The session engages the Mosaic law of circumcision as an example of the negative mark on the organ — not the penis as organ but the phallus as symbol of withdrawn jouissance. The question 'they shall be one flesh' is read as the commandment that inaugurates the sexual as a commanded but structurally impossible union. The session ends on the question of the 'complement' that the castrated subject seeks — is it a phallic complement or something else? Lacan leaves this open, naming it simply 'logic.' The Lilith/Eve/apple myth is read as the awakening of Adam to knowledge — the oral object (apple) standing in for what was lost during the operation of castration.

Key concepts: Castration, Phallus, Jouissance, Objet petit a, Subject, Pleasure Principle Notable examples: Mosaic law / circumcision; Lilith, Eve, and the apple (rabbinical midrash); Erik Erikson (criticized)

Seminar 21: Wednesday 31 May 1967 — Jouissance, the Slave, and the Body (p.227-238)

Lacan opens by situating the logic of the phantasy against Hegel: where Hegel can locate certainty in self-consciousness and conclude with absolute knowledge, Lacan must locate certainty only in the body as the locus of the Other's inscription, and the logic of the phantasy must accommodate a 'logical laxity' — a growing approximation rather than a closed deduction. The body is re-designated as the original locus of the Other: it is where the signifier is first inscribed as mark.

The Hegelian master/slave dialectic is read as a site where jouissance goes astray. The master, by virtue of his position, does not have time for jouissance; the slave, whose body is at the mercy of the master, retains in the margins of that domination the objects that escape signifying mastery — the oral object, the anal object, the gaze, the voice. These are the objects that constitute objet a. The question 'does what one enjoys enjoy?' is posed but left structurally unresolved: the slave has only supposed jouissance of the master (Hegel was mistaken that jouissance belongs to the master). The masochist is explicitly distinguished from the slave: the masochist is not a slave but someone who, by contract, assumes the position of the object itself.

Key concepts: Jouissance, The big Other, Objet petit a, Masochism, Topology, Surplus-jouissance Notable examples: Hegel, Phenomenology of Spirit (master/slave dialectic); Oral, anal, scopic, and invocatory objects

Seminar 22: Wednesday 7 June 1967 — Structuralism, the Body, and the Sexual Act (p.239-250)

Lacan addresses the structuralist moment — what 'structuralisms' have in common is making the function of the subject depend on signifying articulation — and distinguishes his own approach by insisting that structuralism, at its best, leaves the subject in suspense. But what has been inadequately articulated, even within his own teaching, is the fundamental relation of the subject to the body. The body is the original locus of the Other because it is there that the signifier is inscribed from the beginning; this grounding of the Other in the body is the condition for understanding why symbolism is always, in the last resort, corporeal symbolism.

The session's central argument is about what the sexual act is called to assure: a 'sign' from the place of 'I am not thinking' that arrives at 'I am not.' The declaration 'you are my wife' is read as the announcement of man at the place where he is not thinking — a pure act of subject-constitution in the disjunction of body and jouissance. Woman becomes a subject in the same way once she announces herself. The subject in the sexual act is situated at the disjunction of body and jouissance — it is a subject in the measure of this disjunction. Lacan reads Plato's Philebus as an exemplary philosophical failure: by refusing jouissance to the gods, philosophy condemns itself to misunderstanding the order of beings.

Key concepts: Jouissance, Subject, The big Other, Splitting of the Subject, Phallus, Language Notable examples: Plato, Philebus; Lévi-Strauss on structuralism; Menenius Agrippa fable

Seminar 23: Wednesday 14 June 1967 — Perversion, the Schema, and the Sexual Act (p.251-262)

In the penultimate session Lacan reviews the formal schema of the golden-number series (even and odd powers of o converging to o and o² respectively but never summing to One) and applies it to the structure of perversion. Perversion is not a failure of development but the structural position in which the subject, finding the One of sexual union left intact (without the partition that establishes the subject as castrated), seeks jouissance at the level of the original, irreducible objet a. The masochist gives himself over, by contract, to identification with objet a as rejected — less than nothing, an animal mistreated, a subject who has abandoned all the privileges of his function as subject by contract with the Other.

Lacan reads Sade and Baudelaire alongside Reik and Sacher-Masoch: the sadist imagines himself the servant of radical evil (nature as the supreme destroyer) but the sadistic enterprise is always miserably aborted; the masochist achieves what the sadist cannot — a structural position in relation to jouissance that is consistent with the logic of the phantasy. The distinction between neurosis and perversion is framed as the distance of the bedroom: the neurotic finds in the arrangement of objet a a support against the lack of desire in the sexual act, while the pervert constructs the scenario directly.

Key concepts: Masochism, Perversion, Objet petit a, Jouissance, Fantasy, The Act Notable examples: Baudelaire, 'Recueillement' (poem quoted); Sacher-Masoch; Reik on masochism; Sade

Seminar 24: Wednesday 21 June 1967 — Truth, Interpretation, and Desire (p.263-276)

The final session opens by grounding the logic of the phantasy in clinical practice: Lacan notes that the very terms he develops theoretically recur spontaneously in analytic sessions, suggesting he is not constructing an external theory but articulating the coordinates of analytic discourse itself. He then pursues the question of interpretation: if interpretation has no constitutive relation to truth — if it is only a 'discourse-effect' that makes the patient continue associating — then it collapses into suggestion, and the unconscious is dissolved into mere discursivity. The unconscious only has a sense if it preserves a truth it does not avow; and interpretation only functions if it is referred to this truth.

Lacan distinguishes desire from jouissance with rigor: desire emerges from demand because demand belongs to language and generates a break — the object of the demand (the breast) displaces everything that passes through the mouth for digestive needs and substitutes for it what is properly lost, what can no longer be given. Desire is the desire of the Other because its break is produced at the locus of the Other where demand is addressed. The apologue of the good salesman — who creates desire by operating through the desire of the Other (making you fear another will take the object) — illustrates this. The session ends on the case of Florie (Havelock Ellis), read as an example of neurotic passage à l'acte and acting-out simultaneously, and on the formula: from the phantasy as imagined by the neurotic to its function in the perverse register there is exactly the distance of the bedroom.

Key concepts: Truth, Desire, Unconscious, Fantasy, Objet petit a, The Act Notable examples: Freud on dreams designed to disprove his theory; Havelock Ellis, case of Florie; The 'good salesman' apologue

Main interlocutors

  • Sigmund Freud, Beyond the Pleasure Principle
  • Sigmund Freud, The Interpretation of Dreams
  • Sigmund Freud, Three Essays on the Theory of Sexuality
  • René Descartes, Meditations on First Philosophy
  • René Descartes, Discourse on Method
  • Hegel, Phenomenology of Spirit
  • Marx, Capital
  • Jacques-Alain Miller (Boolean logic presentation)
  • Roman Jakobson
  • Plato, Sophist
  • Plato, Philebus
  • Lacan, Écrits
  • Lacan, Seminar XI
  • Lacan, Seminar XIII
  • Pascal, Pensées
  • Chomsky, Syntactic Structures
  • Edmund Bergler (La névrose de base)
  • Theodor Reik (on masochism)
  • Sacher-Masoch
  • Lévi-Strauss, Elementary Structures of Kinship
  • Heinz Hartmann (ego-psychology)
  • St. Anselm, Fides quaerens intellectum
  • Havelock Ellis (case of Florie)

Position in the corpus

Seminar XIV sits at a structural crossroads in the Lacanian corpus. Coming after Seminar XI (The Four Fundamental Concepts, 1964) and Seminar XIII (The Object of Psychoanalysis, 1965–66), it inherits the topology of the cross-cap and projective plane, the four fundamental concepts of the drive, and the initial formalization of objet a, and consolidates them into a single logical edifice organized around the formula of phantasy. Readers who have not worked through Seminar XI — especially the sessions on the drive, the partial object, and the gaze — will find many of the topological references opaque. Seminar XIII, which introduced the object a as the object of psychoanalysis proper, should also be read beforehand. The seminar anticipates, in turn, Seminar XVI (D'un Autre à l'autre, 1968–69), which formalizes surplus-jouissance in explicit relation to Marx, and Seminar XVII (The Other Side of Psychoanalysis, 1969–70), which deploys the four discourses; the concept of jouissance-value introduced in Seminar XIV is the direct precursor of surplus-jouissance (plus-de-jouir). Seminar XX (Encore, 1972–73) also takes up — in a more concentrated way — the impossibility of the sexual relation, feminine jouissance, and the logic of not-all, all of which are present in embryonic form here.

Within the broader Lacanian-theoretical corpus, Seminar XIV is most closely related to Bruce Fink's The Lacanian Subject (which formalizes many of the same themes) and to Slavoj Žižek's early work (especially The Sublime Object of Ideology and The Plague of Fantasies), which draws heavily on the logic of the phantasy as articulated here. It is also an essential complement to Lacan's own 'Kant avec Sade' (alluded to in the seminar) and to 'Subversion of the Subject and Dialectic of Desire' (Écrits), which provides the graph of desire that underpins many of the session's structural diagrams. The seminar is challenging reading even for experienced Lacanians because it is in process — arguments are advanced, corrected, and re-advanced — but it rewards careful study as the most sustained engagement with the formal conditions of the phantasy's logical status in the entire primary corpus.

Canonical concepts deployed