The debate between Laclos and Madame Riccoboni over Liaisons dangereuses is a dispute about what a novel owes its readers: not only stylistic pleasure, but moral usefulness. Riccoboni fears that the book gives vice too much allure and France too damaging a reputation. Laclos argues that faithful depiction, including the seductions of wrongdoing, can expose behavior that society otherwise tolerates. Their exchange turns the novel’s disturbing appeal into its central question: whether showing vice persuasively strengthens its hold or makes it harder to excuse.

The Initial Objection

Madame Riccoboni begins by praising Laclos’s talent while questioning its use. In her view, an accomplished writer should seek both to please and to be useful; success at only one of those aims is insufficient. She objects that the book presents foreign readers with a repellent impression of French morals and taste. More particularly, she urges Laclos not to adorn Marquise de Merteuil with the very attractions that make the character’s vice compelling. Riccoboni also doubts that such people can exist as the novel portrays them: if its characters are too far removed from reality, she suggests, readers need not guard themselves against their example.

Laclos replies courteously, thanking her for the judgment and distinguishing her praise of his style from her condemnation of the book’s moral purpose. He challenges her confidence that depraved women of this kind do not exist. He says that experience has left him unable, in good conscience, to remove the traits he gathered into Marquise de Merteuil’s character. For him, omitting them would conceal part of what he had witnessed. He asks whether revealing and opposing such conduct, and perhaps preventing similar cases, can properly be called a fault.

What Representation Can Accomplish

Laclos rejects the idea that giving vice its real attractions necessarily means endorsing it. He says he sought to depict vice with the charms that can accompany it in life, while ensuring that those charms did not erase the horror the conduct should provoke. The distinction is between embellishing wrongdoing to celebrate it and representing its actual seductiveness so that readers can recognize its danger. The novel’s pleasure, on this account, serves a more difficult purpose than simple entertainment.

His defense also invokes the contrast between the book’s disturbing images and works that present tenderness and virtue. Readers tired by painful material, he suggests, can turn to novels such as Ernestine, Fanny, and Catesby, where sensibility and grace beautify what they touch. He describes these gentler models as grounded in the painter’s heart. His argument does not withdraw the troubling scenes from view; rather, it distinguishes the representation of conduct to imitate from the representation of conduct against which readers should defend themselves.

The plot supplies concrete stakes for that defense. Cécile Volanges refuses to make a duplicate key, citing the danger of discovery, her mother’s vigilance, her own sense that the act would be wrong, and her fear of the blame it might bring. In a later account, Vicomte de Valmont describes using the key to enter her room at night and overcoming her resistance through pressure and threats. Those events are not presented in the correspondence as a direct point-by-point subject of the exchange, but they show the kind of conduct at issue in its argument: the difference between a polished account of a libertine’s strategy and the constraints placed on the person he manipulates. Laclos’s claim that a portrait may be attractive without being approving must be read against such consequences.

Reality, Punishment, and Public Judgment

Riccoboni’s later objections sharpen the question of realism. She compares Marquise de Merteuil with figures such as Tartuffe and Lovelace, arguing that their examples do not settle the matter in Laclos’s favor. She notes that Tartuffe is ultimately brought under authority, while Lovelace’s powerful tenderness for Clarissa makes him, in her view, a creature outside ordinary nature. Her concern is not merely whether fictional villains can be vivid, but whether the structure of a story makes their conduct credible and adequately answerable.

Laclos responds that his aim is not to invent a charge against Tartuffe of incestuous desire; he clarifies that the action he meant to compare concerns the manner of seduction, not an assessment of the precise sin. He also corrects Riccoboni’s account of Tartuffe’s punishment: he argues that the character is punished by authority, not directly by law. This distinction leads to a broader claim about moral writing. Law addresses offenses that government undertakes to punish; where it is silent, public judgment can still answer wrongdoing through ridicule directed at faults and indignation directed at vice.

That public indignation is, for Laclos, not an incidental reaction but a useful social force. He says that Marquise de Merteuil and Vicomte de Valmont are causing a general outcry, yet insists that readers can recognize comparable figures who have been welcomed and honored in their own day. He adds that he deliberately left out some traits because they were too recent and recognizable: exposing vice, he maintains, need not mean exposing particular people. The novel can therefore condemn a type of conduct while withholding details that would turn moral criticism into personal defamation.

A Dispute About Scope and Responsibility

Riccoboni frames her criticism as the response of a woman and a patriotic French reader whose heart is wounded by Marquise de Merteuil’s character. She says that if such a person truly exists, she pities those whose wider experience brings them into contact with such people. Laclos answers that Marquise de Merteuil is not exclusively French: wherever a woman of active senses, a heart incapable of love, intelligence, and a base spirit appears, he argues, a version of the character may exist, altered only by local differences. He says he gave her French dress because he preferred to paint from nature within his reach, not because the underlying type belonged to France alone.

The correspondence remains formally courteous even as the disagreement persists. Riccoboni thanks Laclos for his gift and acknowledges the attention the book is receiving in Paris, while maintaining her unease about its representation. Laclos, reluctant to let the exchange end, treats her silence as no reason to stop defending the work. He values her judgment and continues his case; she, in turn, challenges his reliance on observation and his selection of what to show. Their politeness does not resolve the conflict. It gives a sustained argument its shape: a criticism of the book’s possible harm answered by a defense of truthful depiction and its capacity to awaken resistance.

By the later letters, Laclos makes the social distinction underlying his defense more explicit. The conduct he portrays, he says, is not that of people driven into infamy by poverty, but of women with rank or fortune who can calculate how to add the power of intelligence and social grace to their vices. Such a picture is painful, he concedes, but he considers it true and useful precisely because readers should know what to guard against. The exchange thus leaves open whether the novel’s elegance risks lending vice an appeal of its own. Its decisive claim is narrower: for Laclos, concealment would also carry a moral cost, while an accurate and disturbing portrait may enlist readers’ judgment against the conduct it reveals.