The author examines how women's economic dependence on men shapes social structures and individual roles, arguing that sex-based divisions of labor produce systemic inequality and social inefficiency. She analyzes domestic work as unpaid labor that restricts women's opportunities and traces its persistence to historical and evolutionary forces. Critiquing marriage and motherhood as often structured by economic necessity rather than choice, she advocates measures to redistribute domestic burdens: access to paid employment, education, professionalization or communalization of household services, and legal and civic reforms. The book frames these proposals as part of social evolution and calls for women to secure economic autonomy for the betterment of families and society.