Astell's two best known books, A Serious Proposal to the Ladies, for the Advancement of Their True and Greatest Interest (1694) and A Serious Proposal, Part II (1697), outline her plan to establish a new type of institution for women to assist in providing women with both religious and secular education.
Astell’in en iyi bilinen iki kitabı, A Serious Proposal to the Ladies, for the Advancement of Their True and Greatest Interest (1694) ve A Serious Proposal, Part II (1697),kadınlara hem dini hem de laik eğitim sağlamada yardımcı olarak kadınlara yeni bir kurum kurma planını özetler.