A major philosophical work which is a joy to read. -- The Review of Metaphysics. This book presents an in-depth interpretation of three important parts of Leibniz's metaphysics thoroughly grounded in the texts as well as in philosophical analysis and critique. The three areas discussed are the metaphysical part of Leibniz's philosophy of logic his essentially theological treatment of the central issues of ontology and his theory of substance (the famous theory of monads).