Christine de Pizan also finished by 1405 "The Treasure of the City of Ladies" ("Le tresor de la cité des dames de degré en degré", also known "The Book of the Three Virtues"), a manual of education, dedicated to Princess Margaret of Burgundy. This aims to educate women of all estates, the latter telling women who have husbands: "If she wants to act prudently and have the praise of both the world and her husband, she will be cheerful to him all the time". Her "Book" and "Treasure" are her two best-known works, along with the "Ditie de Jehanne D'Arc".