Gottfried Wilhelm Leibniz (1646-1716) is one of the most imposing figures in the history of Western thought. In this definitive treatment of his wide-ranging philosophical ideas, Benson Mates has brought his own formidable abilities to bear on the unwieldy — and virtually inaccessible — corpus of Leibniz's work. The result is an elegantly written and meticulously reasoned exegesis of the fundamental Leibniz, one that is destined to be a cornerstone of Leibniz scholarship for years to come.