French philosopher; intellectual companion of Sartre. Founder of existentialist feminism. The Second Sex is one of the most influential books of the 20th century.
Born in Paris in 1908, Beauvoir studied philosophy at the Sorbonne and passed the agrégation examination in 1929, becoming one of the first women in France to earn that distinction. A central figure in the post-war Parisian existentialist circle, she co-founded the journal Les Temps Modernes and engaged actively in the major political and moral debates of her time, from anticolonialism to critiques of Stalinism. Her core philosophical project was to apply existentialist categories — facticity, situation, project — to the concrete condition of women, demonstrating that female oppression is not rooted in nature but in historical and social structures that can, and must, be transformed.
In The Ethics of Ambiguity (1947), Beauvoir moves beyond Sartre by arguing that individual freedom is only fully realized when it acknowledges and promotes the freedom of others: solidarity is not an addition to existentialist ethics, but its very condition of possibility. This articulation of situated freedom and collective responsibility anticipates central themes of second-wave feminism and philosophies of difference. Her legacy extends from the academy to activism: philosophers, sociologists, and gender theorists around the world continue to engage with her work, which remains an indispensable reference for thinking about the relationship between existence, the body, and emancipation.
Key Concepts
- “One is not born, but rather becomes, a woman”: the feminine is a social and historical construction, not a biological given
- Woman is the Other in relation to man as universal subject — a structure of oppressive alterity
- Existentialist freedom applied to gender: woman must recognize herself as a free subject, not as an object or complement to man
- Ethics of ambiguity: human freedom is ambiguous — we are free and situated; ethics demands assuming this ambiguity and acting in solidarity
Influenced by
- Sartre — existentialism; radical freedom
- Hegel — master/slave dialectic (applied to gender)
- Husserl and Heidegger — phenomenology of situation
Influenced
- Second-wave feminism (Betty Friedan, Kate Millett)
- Judith Butler — performativity of gender
- Queer theory
Works
The Second Sex (1949); The Ethics of Ambiguity (1947); The Mandarins (novel, 1954, Prix Goncourt).
See also
Twentieth-Century Philosophy