•Why it earns a slot
Written 130 years before British women could vote, it is the first systematic philosophical argument that women's inferior status is a product of education and law, not nature, the foundation every later feminist argument builds on.
Wollstonecraft argues that women are not naturally weak, vain, or irrational, they are made that way by an education system that trains them only to please men rather than to reason. Written as a direct rebuttal to Rousseau and other male educators of her era, the book insists that virtue has no sex and that a woman denied reason is denied the one thing that makes any human being moral.
This distillation is written from the freely available original, which is always the better read when you have the time: Project Gutenberg.