Kant und die Epigonen, a critique of the followers of Kant urging a return to their master (1865) (Kant and his inferior successors) Ueber die Freiheit des Willens (1866) (On free will) Ueber den objektiven Anblick (1869) (On the objective point of view) Vier Monate vor Paris, a journal published anonymously (1871) Zur Analysis der Wirklichkeit (1876; 3rd ed. 1900) (About the analysis of actuality) Die Klimax der Theorien (1884) (The climax of theory) Geist der Transcendentalphilosophie (1901) Grundriss der kritischen Metaphysik (1901) (Outline of critical metaphysics) Gedanken und Tatsachen, 2 Bände (1882–1904) (Thoughts and facts)