Frederick C. Beiser tells the story of the emergence of neo-Kantianism from the late 1790s until the 1880s. He focuses on neo-Kantianism before official or familiar neo-Kantianism, i.e., before the formation of the various schools of neo-Kantianism in the 1880s and 1890s (which included the Marburg school, the Southwestern school, and the Göttingen school). Beiser argues that the source of neo-Kantianism lies in three crucial but neglected figures: Jakob Friedrich Fries,