Frédéric Marty’s broad-ranging portrait of Louise Dupin introduces her life, her social milieu, and, most importantly, her philosophical projects. Marty brings much-deserved attention to Dupin’s little-known work, maintaining throughout an appropriate balance between overview and detailed description. The book is divided into three parts, the first devoted to familial and social relations (notably Dupin’s salon and her secretary Jean-Jacques Rousseau), and the second and third devoted to Dupin’s major projects — the Ouvrage sur les femmes and a refutation of Montesquieu’s Esprit des lois — with the guiding threads being Dupin’s feminist intervention (treating law, science, history, education, mores) and her political thought. In Part One, Marty traces Dupin’s various relations, explaining, for example, how a bourgeoise married to a tax farmer had so many connections within the high nobility. He also gathers together information about Dupin’s bureau d’esprit and her correspondents (the Abbé de Saint-Pierre, Bernard de Fontenelle, Pierre de Marivaux, and Voltaire…). He briefly explores how rivals such as the Marquise Du Deffand and Claudine-Alexandrine Guérin de Tencin viewed Dupin, as well as the various Dupin family members’ relationships with Rousseau. Marty focuses in Part Two on a global understanding of Dupin’s major work, the unfinished Ouvrage sur les femmes. The presentation of its structure is a great synthesis based on the manuscripts we have available, which the author has exhaustively studied. Marty provides a valuable view into Dupin’s thought for those who may not realize how significant and wide-ranging it is. He uses a related text — the ‘Discours préliminaire’ — as a guiding frame. The section on the sources of Dupin’s thought addresses the influential Cartesian François Poulain de La Barre as well as Marie Gournay and the Marquise de Lambert, the latter being the least essential. However, Marty makes a case for enriching our understanding through this comparison in regard to Dupin’s moral writings. As he rightly emphasizes, Dupin is a political theorist, and Part Three of the book deals with her critique of Montesquieu and participation in the group-authored Réflexions sur un livre intitulé de l’Esprit des loix (Paris: Benjamin Serpentin, 1749). Marty focuses on her preparatory manuscripts for that project, which he accurately describes as substantial yet not organized in a way to make this easily visible. Particularly impressive here is Marty’s careful thinking about Dupin’s monarchism and the tensions in her political thought between her radical feminist arguments and her less radical views of social stratification. The work is supplemented by a summative conclusion, bibliography, and two appendices, one a list of the forty-seven articles of the Ouvrage. It would have been wonderful if this had further elaborated on what is and is not known about the organization of the Ouvrage. Since the scope of Marty's book is not exhaustive in any one aspect, Marty leaves us looking forward to his forthcoming edition of the Ouvrage. Marty’s thoughtful exposition here makes clear that Dupin’s work will reward those interested in engaging with it more deeply. He has crafted an organized, wide-ranging, and insightful view into Dupin. Readers will find new interdisciplinary connections to explore in the presentation of this Enlightenment thinker. -Angela Hunter