A Vindication of the Rights of Woman opens with Wollstonecraft surveying the books written on female education and finding them, almost without exception, guilty of treating women as creatures rather than persons. Her indictment is precise: by focusing on beauty, sensibility, and the art of pleasing, these books have conspired to render women weak and wretched. The argument she sets out to make is that women are human beings first, and that reason, the capacity which distinguishes any being above the brutes, belongs to them as fully as to men.
Chapter by chapter, Wollstonecraft traces the causes of women's degradation. The prevailing opinion of a sexual character, as she calls it, holds that women should cultivate a disposition entirely unlike men's: passive, yielding, gentle, and ornamental. She shows this opinion to be self-serving. Tyrants want slaves; sensualists want playthings. Keeping women ignorant serves both interests while harming women and, through them, the families and societies they are embedded in.
Wollstonecraft devotes extended attention to Rousseau, whom she respects as a writer and condemns as a thinker on this subject. Rousseau's portrait of Sophia in Émile holds that women should be educated only to please and obey. Wollstonecraft attacks not the surface details but the foundation: if obedience without understanding is what is required of women, then women are being trained as moral subordinates, not as moral agents, and that is a violation of their nature as rational beings.
The argument for equal education is also an argument about virtue. Wollstonecraft holds that genuine virtue can only be the product of a being who reasons and chooses. A woman taught to manage her husband through soft arts and dissimulation, or through habitual submission, has been denied the very conditions under which character forms. The same logic that Rousseau accepted for men, that reason must be exercised for virtue to develop, Wollstonecraft extends without reservation to women.
The book closes with a chapter on national education, where Wollstonecraft proposes co-education as the practical remedy. Boys and girls educated together in day schools, learning on equal terms, would develop minds capable of genuine friendship, civic responsibility, and rational affection. The conclusion she draws is explicit: make women rational creatures and free citizens, and they will quickly become good wives and mothers. They cannot be made so by flattery, confinement, or ignorance.