This study of the metaphysics of G. W. Leibniz gives a clear picture of his philosophical development within the general scheme of seventeenth-century natural philosophy. Catherine Wilson examines the shifts in Leibniz's thinking as he confronted the major philosophical problems of his era. Beginning with his interest in artificial languages and calculi for proof and discovery, the author proceeds to an examination of Leibniz's early theories of matter and motion, to the phenomenalistic turn in his theory of substance and his subsequent de-emphasis of logical determinism, and finally to...