This intellectual biography of Immanuel Kant's 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. Schönfeld meticulously examines most of Kant's 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 Kant's pre-critical works. Schönfeld 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.