The work of women philosophers in the early modern period has traditionally been overlooked, yet their writing on topics such as reality, time, mind and matter holds valuable lessons for our understanding of metaphysics and its history. This volume of new essays explores the work of nine key female figures: Bathsua Makin, Anna Maria van Schurman, Elisabeth of Bohemia, Margaret Cavendish, Anne Conway, Damaris Cudworth Masham, Mary Astell, Catharine Trotter Cockburn, and Emilie Du Chatelet. Investigating issues from eternity to free will and from body to natural laws, the essays uncover long-neglected perspectives and demonstrate their importance for philosophical debates, both then and now. Combining careful philosophical analysis with discussion of the intellectual and historical context of each thinker, they will set the agenda for future enquiry and will appeal to scholars and students of the history of metaphysics, science, religion and feminism.