I hesitated a long time before writing a book on woman. The subject is irritating, especially for women; and it is not new. Enough ink has flowed over the quarrel about feminism; it is now almost over: let’s not talk about it anymore.

Yet it is still being talked about. And the volumes of idiocies churned out over this past century do not seem to have clarified the problem. Besides, is there a problem? And what is it? Are there even women? True, the theory of the eternal feminine still has its followers; they whisper, “Even in Russia, women are still very much women”; but other well-informed people–and also at times those same ones–lament, “Woman is losing herself, woman is lost.” It is hard to know any longer if women still exist if they will always exist, if there should be women at all, what place they hold in this world, what place they should hold. “Where are the women?” asked a short-lived magazine recently. But first, what is a woman? “Tota mulier in utero: she is a womb,” some say. Yet speaking of certain women, the experts proclaim, “They are not women,” even though they have a uterus like the others. Everyone agrees there are females in the human species; today, as in the past, they make up about half of humanity; and yet we are told that “femininity is in jeopardy”; we are urged, “Be women, stay women, become women.” So not every female human being is necessarily a woman; she must take part in this mysterious and endangered reality known as femininity. Is femininity secreted by the ovaries? Is it enshrined in a Platonic heaven? Is a frilly petticoat enough to bring it down to earth? Although some women zealously strive to embody it, the model has never been patented. It is typically described in vague and shimmering terms borrowed from a clairvoyant’s vocabulary. . . .
~ Simone de Beauvoir, Introduction to The Second Sex, 1949