What did Christine de Pizan think woman needed in order to attain levels of learning comparable with men's

In her book The Book of the City of Ladies, it was written to combat the current ideas that existed about woman's nature. City of Ladies is divided into three sections in which Christine builds her symbolic city for women. She includes all the famous women who have ruled in history, women who have honored their parents, guarded their chastity, been faithful to their husbands, and all of those women who have become martyrs for their faith. Her book honored all kinds of great women and gave them a place to be safe from the attacks of men. Christine's book stood as a testimony to the greatness and accomplishments of women, putting them on the same level as men.