The beginning of existentialist feminism is usually attributed to the publication of the translation of Simone de Beauvoir's The Second Sex in the U.S. This book incidentally is considered to have started the second wave of feminism. Later on those feminists who have based their thinking on those philosophers classified (rightly or wrongly) as "existentialist" are also taken to be "existentialist feminists," such as Mary Daly. And if one reads closely The Feminine Mystique by Betty Friedan, who is usually considered as a liberal feminist (and the first of the second wave, along with de Beauvoir), one also finds that she is something like an existentialist, for she frames women's problems in terms of lack of meaning of life due to confinement to the domestic sphere.