Nietzsche. Marx. Hegel. Kierkegaard. Mill. Our vast collection of 19th century philosophy textbooks examines the influential theories and figures of the 1800s. From post-Kant idealism to the historical materialism that defined Marxism’s “Communist Manifesto”, the influential theories examined in these 19th century philosophy textbooks remain some of the most revolutionary and prominent in the history of philosophy. For all introductory levels, undergraduate philosophy majors, and graduate students alike, these overviews of 19th century philosophy and philosophy textbooks focus on foundational theories such as Absolute Idealism, Existentialism, Marxism, Utilitarianism, Pragmatism, and more.