Orestes’ matricide and acquittal, presented in the Eumenides as part of the triumph of patriarchal right over maternal authority, turns a change in kinship and law into a story of violence and judgment. Orestes kills his mother, Clytemnestra; a tribunal of the gods absolves him, declaring him the son of Agamemnon before the son of Clytemnestra. Simone de Beauvoir reads the myth not as a factual record of a literal war between the sexes, but as an image through which male supremacy was made to seem rightful and enduring.

The myth and its verdict

The episode belongs to the Eumenides, which Beauvoir describes as illustrating the triumph of patriarchy over maternal right. Its decisive act is not only the killing of Clytemnestra but the tribunal’s ruling afterward: the gods’ judgment gives precedence to Orestes’ paternal affiliation. The verdict makes a new ordering of descent appear authoritative, placing the father’s claim above the maternal bond.

Beauvoir sets this story beside the Assyro-Babylonian legend in which Bel-Marduk kills Tiamat and divides her body to form the heavens and the earth. In both myths, a male figure’s victory over a maternal figure is linked to the establishment of order. The parallel situates Orestes’ acquittal within a wider symbolic pattern in which masculine authority is represented as overcoming a feminine force associated with disorder.

From maternal right to paternal authority

The myth gives dramatic shape to the replacement of matrilineal descent by agnation, a shift Beauvoir calls one of the most important ideological revolutions of the primitive period. In the patriarchal account of the change, the father holds rights and transmits them, while the mother is diminished to the role of nurse. The Eumenides’ judgment expresses that hierarchy as divine law: Orestes is defined chiefly through Agamemnon, not through the woman who bore him.

Beauvoir cautions, however, that the historical transition was gradual. The legends depict a violent victory, but, in her account, the movement toward paternal rights involved neither one decisive struggle nor a simple defeat of women. The change instead brought law into alignment with a social reality men already controlled. The tale’s force lies in converting that gradual reordering into an intelligible drama of revolt, judgment, and succession.

Beauvoir’s interpretation

For Beauvoir, the acquittal reveals how myth can turn a social arrangement into an eternal principle. The story does not merely recount Orestes’ act; it authorizes a system in which the father’s lineage defines rights and the mother’s authority is subordinated. More broadly, it exemplifies the process by which male lawmakers, religious traditions, and philosophical accounts represented women’s subordinate condition as ordained in heaven and useful on earth.

The episode also belongs to Beauvoir’s argument that the category of woman as the Other is produced through relations of power. Once man asserts himself as subject, the Other is cast as threat and negation; myths of male victory then give that opposition a dramatic and religious form. Orestes’ acquittal thus functions as a narrative justification for patriarchal authority, even though Beauvoir distinguishes the symbolic battle from the slower historical transitions it represents.

Place in the historical argument

Beauvoir’s wider account insists that women’s history has been written by men, whose laws, customs, and religions served their own interests. The Eumenides episode is one example of how a patriarchal order can present its supremacy not as a contingent social arrangement but as a verdict supported by divine authority. The acquittal is therefore significant less as an isolated plot resolution than as a compact image of a broader historical claim: paternal power is made to look natural by placing it at the center of myth and law.