Classical German Philosophy has traditionally been understood as the period in the history of ideas in which the investigation of the human mind takes precedence over the investigation of the natural world. This assessment has a twofold consequence. On the one hand, the philosophy of the period has been praised for its contributions to our understanding of multiple expressions of human rationality such as history, art, and religion. On the other hand, such a philosophy has been criticized for its obscure speculations alien to the standards of modern scientific cognition. The philosophy of nature developed at the time has been accordingly dismissed as a piece of outdated metaphysics. Challenging this view, the contributions collected in this book argue for the historical and contemporary relevance of the approaches to nature formulated at the time.