1908 – 1986
Simone de Beauvoir (1908–1986) was a French existentialist philosopher, feminist theorist, and writer whose landmark work The Second Sex (1949) laid the philosophical foundations for second-wave feminism. She argued that womanhood is not a biological given but a social construction, famously captured in the phrase 'One is not born, but rather becomes, a woman.' Her work synthesized existentialist ontology with a rigorous analysis of how patriarchal structures constrain women's freedom and subjectivity.
Authored The Second Sex, the foundational text of modern feminist philosophy
Developed the concept that gender is socially constructed rather than biologically determined
Applied Sartrean existentialism to the analysis of women's oppression and situated freedom
Introduced the concept of 'the Other' as a framework for understanding women's subordination
Wrote The Ethics of Ambiguity, a systematic existentialist ethics