Peter R. Anstey is Professor of Philosophy at the University of Sydney. He specializes in early modern philosophy with a particular focus on the philosophy of John Locke, experimental philosophy, and the philosophy of principles. He is the author of John Locke and Natural Philosophy (2011) and editor of The Oxford Handbook of British Philosophy in the Seventeenth Century (2013).

• IntroductionPeter R. Anstey1. Early Modern Mathematical Principles and Symmetry ArgumentsJames Franklin 2. The Development of Principles in Equity in the Seventeenth CenturyJoe Campbell 3. Alchemical and Chymical Principles: Four Different TraditionsWilliam R. Newman4. The Two Comets of 1664–1665: A Dispersive Prism for French Natural Philosophical PrinciplesSophie Roux5. Corpuscularism and Experimental Philosophy in Domenico Guglielmini’s Reflections on SaltsAlberto Vanzo6. The Principles of Spinoza’s PhilosophyMichael LeBuffe7. Principles in Newton’s Natural PhilosophyKirsten Walsh8. Leibniz on Principles in Natural Philosophy: The Principle of the Equality of Cause and EffectDaniel Garber9. Experimental Philosophy and the Principles of Natural Religion in England, 1667–1720Peter R. Anstey10. A Conflict of Principles: Grotius’ Justice versus Hume’s UtilityKiyoshi Shimokawa

"This fascinating collection provides case studies allowing the reader to appreciate how many and how varied are the ways in which the concept of a principle has been deployed and to what effect in the early modern period." – Margaret Atherton, University of Wisconsin-Milwaukee, USA