Abstract
Anne Conway (1631–1679) was one of the most intellectually adventurous and well-read philosophers of religion in the seventeenth century. Her unfinished systematic treatise, posthumously published as The Principles of the Most Ancient and Modern Philosophy, moves from the divine attributes through a theodicy based on universal salvation to a rejection of substance dualism. Her approach demonstrates a syncretist approach to religion that blends multiple intellectual traditions, including Cambridge Platonism, Quakerism, and the Kabbalah. Her admirers included Henry More, Francis von Helmont, and G.W. Leibniz.