In this dissertation, I explore how seventeenth- and eighteenth-century shapes of naturalism impact the thought of several key figures on the cusp of or within the nineteenth-century German tradition. By “naturalism” I mean here the view according to which there is nothing but nature. In clarifying the legacy of early modern versions of this view in the modern German context, I contribute to recent scholarship in at least two main ways. First, in each case I supplement the literature on particular figures who are discussed in detail throughout the dissertation—for instance, in the dissertation’s fourth chapter, Friedrich Nietzsche and Benedict Spinoza. Nietzsche once considered Spinoza his only “predecessor” (Vorgänger), and indeed a number...