Incest taboo

The Incest taboo appears both as a problem for psychoanalytic explanation and as part of a broader account of how family authority and social institutions organize sexual and economic relations. The book challenges the idea that prohibition can be understood simply as a command imposed by a father: its meaning and effects must be considered within the social world that gives authority its force.

Psychoanalytic Explanation

The book argues that psychoanalysis treats drives and prohibitions as given rather than explaining how they arise from human choice and socially recognized values. It presents incest as a clear example: Freud’s account makes the prohibition depend on the father’s command, yet leaves unexplained why the father forbade it. In this model, the superego internalizes orders attributed to an arbitrary authority, while instinctive tendencies remain unexplained; morality and sexuality are treated as separate, and the connection between individual life and society is left unresolved.

This criticism forms part of a larger objection to a theory that can accommodate counterevidence by multiplying explanations. When a doctrine makes every anxiety evidence of desire and adds auxiliary explanations to preserve its scheme, the framework risks becoming arbitrary. The book’s alternative is to seek the significance of sexuality and prohibition in the intentionality of existence and in the values that people and societies establish, rather than accepting the prohibition as an unexplained fact.

Family, Authority, and Social Structure

The discussion of Roman family law shows how family authority is embedded in material and legal arrangements. After the death of Tarquinius, the account describes patriarchy taking hold as agricultural property and the private estate make the family the nucleus of society. Women are placed under guardianship, and marriage can transfer a woman into her husband’s power. In marriage with manus, the husband replaces the woman’s father or male relatives as her authority and gains power over her person and property.

That legal history also demonstrates that family power is not a single, unchanging relation. The conflict between a woman’s paternal and conjugal clans gives rise to sine manu marriage, in which her property remains under guardians’ control and authority over her person is divided between husband and father. A family court can settle disputes between them, offering the woman recourse between two authorities without making her an independent individual. The example links intimate regulation to inheritance, property, and the organization of the family rather than treating family rules as isolated commands.

Law, Marriage, and Women’s Status

The book repeatedly distinguishes formal rights from the practical conditions that determine whether they can be exercised. In its account of the Napoleonic Code, the married woman is subjected to her husband’s authority over her person and possessions; he determines the family’s residence and holds greater rights over the children. The code also regulates paternity and imposes severe conditions on unmarried mothers and illegitimate children. These rules show how family law assigns power and responsibility, with consequences for women’s autonomy and reproductive lives.

Later reforms alter but do not immediately dissolve that arrangement. Divorce is restored in France in 1884, and a wife may seek it if her husband commits adultery, although adultery remains a criminal offense only when committed by the wife. The right to determine natural paternity is authorized in 1912. Reforms in 1938 and 1942 abolish the wife’s legal duty of obedience, yet leave the father as head of the family and preserve limits on the wife’s powers. The account therefore treats legal change as incomplete: formal modification does not by itself establish equality between spouses.

Historical Change and Significance

The book connects shifts in women’s status to material changes, especially participation in production and greater control over reproduction. As women gain the possibility of reducing pregnancies and taking on economic roles, the conditions that had tied them to husbands through patrimony begin to change. The growing importance of personal property weakens the family group’s hold over wealth, while divorce becomes more common in the account’s description of modern capitalism. These developments help explain why family relations and their governing rules change over time.

Across these examples, the Incest taboo is not developed as a separate legal rule with a detailed history of its own. Its central significance lies in the challenge it poses to explanations that reduce social prohibition to an unexplained paternal command. The surrounding analysis instead insists that sexuality, authority, property, and family organization must be read together, and that a rule’s apparent universality cannot substitute for an account of how social values and power relations produce and sustain it.