Libertine egoism

Libertine egoism is a doctrine of self-interest that makes personal advantage the measure of action and discounts harms to others as external to the self. In the argument presented by Dubois and Coeur-de-fer, it is not merely an excuse for isolated wrongdoing: it becomes a systematic challenge to moral obligation, collective cooperation, and the legitimacy of the social contract. The doctrine’s central tension is that it treats self-interest as a universal rule while offering no protection to those who become another person’s weaker or less useful counterpart.

Personal Advantage as the Measure

Dubois begins by recasting violence against travelers as a consequence of the law. Because theft and murder, she claims, receive equal punishment, a thief has no practical incentive to avoid the more serious crime if it can conceal the first. She then makes the argument explicitly personal: the value of an act should be assessed in terms of the actor’s own interests, not by comparing the actor’s satisfaction with the victims’ continued lives. Even a small gain, she contends, can outweigh grave harm to people who are treated as morally distant from the person deciding.

The reasoning rests on a division between physical sensation and moral feeling. Personal pleasure is immediate and felt directly; another person’s suffering is described as something that reaches the agent only through moral sentiment, which Dubois portrays as unreliable. From this distinction she concludes that self-interest should prevail whenever the agent can act without unacceptable personal cost. The argument turns disregard for others into an asserted principle of rational choice rather than an incidental failure of compassion.

Dubois also portrays religion, law, inherited prejudice, and habitual thinking as restraints that prevent people from pursuing their interests fully. Her ideal agent is strong, healthy, mentally forceful, and committed to preferring himself to others. Such a person, in her account, measures everything by what affects him directly and refuses to let the aggregate of harms to others outweigh even a small loss of personal enjoyment. The speech therefore joins a theory of sensation to a theory of power: the freedom to act selfishly belongs most securely to the person able to withstand the consequences.

Crime, Cooperation, and Self-Preservation

Therese challenges Dubois by arguing that such doctrines may suit someone powerful enough to fear little, but not people who live under threat and humiliation. Her objection points to the practical vulnerability of those who adopt criminal principles without having the strength to secure themselves against retaliation. Coeur-de-fer answers by disputing her account of the criminal band’s cohesion: its members, he says, are not held together by virtue, but by interest, egoism, and selfish calculation.

As an example, Coeur-de-fer imagines himself as the strongest member of the group. He says he does not attack his comrades to seize their shares because acting alone would deprive him of the means to obtain the fortune he expects to gain with their help. The others, in turn, refrain from attacking him for the same self-interested reason. Cooperation thus appears not as evidence of mutual moral commitment but as a temporary arrangement whose value depends on continued advantage. The group restrains its members only while collaboration promises more than betrayal.

This reasoning sharpens the doctrine’s instability. Self-interest can produce cooperation, but it does not establish a lasting duty to cooperate; each member’s restraint remains conditional on the expected reward. The band’s apparent solidarity is consequently compatible with an underlying readiness to place individual gain first. Coeur-de-fer presents this not as a contradiction in his position, but as proof that the social bond can be explained without appealing to virtue.

The Social Contract and Unequal Exchange

The argument then widens from the criminal group to society. Coeur-de-fer describes the general interest as the combined mass of individual interests, but insists that private interests can be reconciled with the common one only through concessions. That exchange, he argues, cannot be presumed fair for everyone. A person with little to give may have nothing available to surrender; a person who gives much may discover that the return is far smaller than the sacrifice.

From this alleged imbalance, Coeur-de-fer draws a case against remaining bound by the agreement. Someone who believes the bargain unjust, he suggests, may leave for a society of people in a comparable position, where their combined lesser powers can resist a broader authority. The proposal does not restore the social contract as a shared moral foundation. Instead, it imagines association as an alliance of aligned interests, formed to oppose a stronger party whose authority is perceived as unfair.

Coeur-de-fer goes further by presenting repeated violations of the contract as a possible route from weakness to strength. A person who breaks the agreement risks being returned by law to the weaker class, but might instead become one of the stronger. In the speech’s stark calculation, even the loss of life is described as less terrible than continued existence in degradation and misery. The argument therefore treats legal punishment and social subordination as risks to be weighed against the possibility of changing one’s position, not as decisive moral reasons to obey.

The Doctrine’s Stakes

The debate culminates in a deliberately stark choice: crime as a means of becoming happy, or the noose as a means of avoiding unhappiness. That formulation compresses the preceding claims into a forced calculation. It presents obedience not as a path to justice, but as a possible continuation of misery; it presents crime not as an ethical good in itself, but as an instrument for escaping an intolerable condition. The framing makes the doctrine sound decisive by excluding other possibilities, including collective reform or obligations that remain binding despite unequal returns.

Across the speeches, libertine egoism moves through three related scales: personal sensation, the criminal group’s practical cooperation, and society’s unequal distribution of burdens and benefits. At each scale, restraint is explained as calculation rather than virtue. Yet the principle also exposes a conflict that its advocates do not resolve: the person who claims the right to disregard others’ interests may be subject to the same rule when someone stronger calculates that harming him is advantageous. Therese’s response draws attention to precisely that vulnerability, while Coeur-de-fer’s defense treats the danger as another cost in the balance. The concept thus functions both as an argument for self-determination and as a logic that leaves security dependent on relative power.