The Philosophy of Leibniz: Metaphysics and Language by Benson Mates (Professor of Philosophy, Professor of Philosophy, University of California, Berkeley)
This is the first, and indeed the definitive systematic account of the wide-ranging philosophical ideas of Leibniz. The author, a highly respected analytical philosopher, has brought his own formidable abilities to bear on the unwieldy and inaccessible corpus of Leibniz's work.