Laplanche held that Freud's abandonment of the seduction theory in 1897 was a going-astray. He took the theory up again but detached it from actual abuse and from pathology Nouveaux fondements pour la psychanalyse4. Nouveaux fondements pour la psychanalyse (1987) drew together the research of the Problématiques seminars, a moment of which Laplanche wrote, "Now the moment has come to show how my positions are connected with each other." It was the first major statement of the general theory of seduction New Foundations for Psychoanalysis4. As Nicholas Ray stressed, the theory had nothing to do with the therapies of recovered memory. It moved seduction from the origin of a pathology to the foundation of every psyche Forming new knots2.
In the ordinary care of the infant, the adult addresses messages to the child in words, gestures and bodily care. These messages are enigmatic to their sender as well as to their receiver, because they are compromised by the adult's unconscious sexuality New Foundations for Psychoanalysis4. The founding situation is therefore the universal one between adult and child, not the family triangle. "A child can become human and be educated without parents, but not without receiving adult messages," Laplanche said, and the adult's own unconscious is the third term in the situation The other within6. The ego, the unconscious and the superego form secondarily, out of the infant's partly failed attempts to master, symbolise and translate these inscriptions Forming new knots2. Primal repression is the failure of that translation: what cannot be translated is left behind as the first unconscious contents New Foundations for Psychoanalysis4.
On this basis Laplanche extended Freud's translational model of repression into a translational model of afterwardsness, of trauma and infantile sexuality, and of the constitution of the human being as a self-narrating, self-theorising creature. He later also called the founding situation the fundamental anthropological situation New Foundations for Psychoanalysis4 Freud and the Sexual7. In the same spirit he came to regard leaning-on as a prop by which Freud avoided what seduction had revealed. Sexuality, he concluded, comes from the other The other within6.
The essays collected in La révolution copernicienne inachevée (1992), written between 1967 and 1992, take their title from an essay of 1992. For Laplanche the unconscious is neither inborn nor the expression of an instinctual id. It is an alien within the subject, formed from the untranslated remainders of the other's messages. Freud had decentred the subject toward the other but repeatedly fell back on endogenous and phylogenetic explanations The Unfinished Copernican Revolution5. In 2000 Laplanche compared the state of psychoanalytic theory to "late Ptolemeism: an accumulation of extra hypotheses" The other within6. The same collection includes essays on transference as provoked by the analyst and on masochism and the general theory of seduction The Unfinished Copernican Revolution5. In one of them, "Time and the Other" (1991), he glossed analysis as an unweaving, "a disentangling to allow the formation of new knots" Forming new knots2.
His last essays, collected in Sexual (2007), distinguish drive from instinct and sexuality from attachment. They also treat gender, sex and the sexual, and read castration and the Oedipus complex as codes and narrative schemas Freud and the Sexual7. In these years he was working on primary identification as identification by the other. The gender of an individual, he argued, is first assigned by the adults around the child, and the assignment carries their unconscious with it The other within6.