Perverse Act

The "Perverse Act" designates the specific modality of action through which the pervert enacts his structural relation to the truth of the Other's desire. Crucially, the pervert does not simply transgress the law for pleasure; rather, in performing the perverse act, the pervert seeks to inscribe a "brand of falsity" (marque de faux) — that is, to mark a specific site in the Other's symbolic order as fraudulent, to demonstrate that the law's grounding is a fiction. The act is thus not random lawbreaking but a targeted, formalized operation: the pervert locates precisely the place where the symbolic guarantee is weakest and presses his act into that gap, not to destroy the law but to expose and simultaneously confirm it as false. This aligns with the Lacanian principle that perversion is the mirror image of neurosis — where the neurotic represses the knowledge that the Other is lacking, the pervert stages and brandishes it.

In the context of Seminar XIII's broader argument (jacques-lacan-seminar-13-1), the perverse act is theorized through the topological framework of the Möbius strip's double-circuit structure. The two faces of the Oedipus Complex — the generative drama of the law and the drama of the desire to know — are in fact one continuous surface, and the perverse act traverses both circuits simultaneously: it is simultaneously an act within the law (the pervert knows castration, is not ignorant of it) and an act that marks that law as a counterfeit. The objet petit a is the hinge that makes this double articulation possible, since it is the object that does not appear in the mirror — the remainder that cannot be symbolized — and it is precisely in its vicinity that the pervert places his brand. The formalization of this via the castration complex, which Lacan defers to the following year, would supply the rigorous account of why the perverse act must take this topological, doubled form.

The Perverse Act appears in jacques-lacan-seminar-13-1 at a pivotal juncture where Lacan is working toward a topological formalization of the Oedipus Complex and the castration complex. It sits at the intersection of several canonical concepts. In relation to Perversion and Castration, the concept specifies what distinguishes the pervert's use of castration knowledge: unlike the neurotic who submits to or represses castration, the pervert acts it out to inscribe falsity on the Other, leveraging the structural fact that castration is a symbolic act targeting an imaginary object (the phallus as marker of the Other's desire). In relation to the Möbius Strip, the act's "double-circuit" character — simultaneously inside and outside the law, simultaneously confirming and exposing its fraudulence — maps directly onto the strip's one-sided topology, where what appears to be a traversal of two faces is in fact one continuous movement. In relation to Jouissance, the perverse act is the form in which the pervert extracts and offers jouissance — crucially, to the Other — using the act as a vehicle to place surplus-enjoyment at the site of the Other's lack rather than experiencing it as the neurotic's private symptom.

In relation to the Gaze and Objet petit a, the "brand of falsity" the pervert wants to place is best understood as an inscription at the site where the objet a normally falls out of the specular field — the blind spot, the stain. The pervert tries to make that absence visible, to mark it, whereas for Lacan the objet a is by definition unapprehensible and evanescent. The Perverse Act thus functions as an extension and specification of the general concept of Perversion, naming not the pervert's structural position (which is defined by disavowal of castration) but the particular, purposive gesture through which that position is enacted and repeatedly confirmed.

Seminar XIII · The Object of Psychoanalysis (alt. translation)Jacques Lacan · 1965 (p.274)

there is always in the exercise of the perverse act, a place in which the pervert really wants to have put the brand of falsity (la marque de faux).

The phrase "brand of falsity" (la marque de faux) is theoretically dense: "brand" (marque) implies a deliberate, permanent inscription — an act with a target and an intention — while "of falsity" (de faux) frames the pervert's project not as simple transgression but as a truth-operation directed at the Other's symbolic authority. The additional weight of "really wants to have put" (veut avoir mis) introduces a peculiar temporal logic — a desire to have-already-inscribed, which is the future anterior structure of the act — linking the perverse act to the retroactive, irreversible topology Lacan associates throughout Seminar XIII with the Möbius strip's double circuit.