 Already in her non published "Cronstedtska poemboken", she included the poem "Fruentimbers plikt at upöfva deras vett" (The Duty of Women to use their wit), and her defense of women's intelligence are often displayed in her work, most notably in her famous "Fruentimrets försvar" (Defense of Women) from 1761, written in opposition to the misogyny of Rousseau.In "Friarekonsten" (Art of proposing), she warns women, that men's assurances of friendship often turned to a demand of obedience after marriage.In parallel to being a supporter of the scientific age of enlightenment, however, she was somewhat skeptic to the idea that the knowledge of science (in oppose to the emotional mysticism of religion) in itself could give happiness, a doubt she expressed in "Till Criton" (1754), written to Carl Klingenberg.