This book, first published in 1975, provides critical and comprehensive introduction to the philosophy of Leibniz. C.D. Broad was Knightsbridge Professor of Moral Philosophy at Cambridge from 1933 to 1953 and this book is based on his undergraduate lectures on Leibniz. Broad died in 1971 and Dr Lewy has since edited the book for publication. Leibniz is, of course, recognized as a major figure in all courses in the history of philosophy, but he has perhaps been less well served by textbook writers than most other philosophers. Broad has provided here a characteristically shrewd and sympathetic survey which further confirms his known virtues as an historian and expositor. It is a very clear, detailed and orderly guide to what is notoriously a most difficult (and sometimes disorderly) philosophical system; it provides a masterful introduction to the subject.