This intellectual biography of Immanuel Kants early years-- from 1746 when he wrote his first book, to 1766 when he lost his faith in metaphysics --makes an outstanding contribution to Kant scholarship. Schonfeld meticulously examines most of Kants early works, summarizes their content, and exhibits their shortcomings and strengths. He places the early theories in their historical context and describes the scientific discoveries and philosophical innovations that distinguish Kants pre-critical works. Schonfeld argues that these works were all aspects of a single project carried out by Kant to reconcile metaphysical and scientific perspectives and combine them into a coherent model of nature.