German idealism was a speculative philosophical movement that emerged in Germany in the late 18th and early 19th centuries. It was a reaction from Immanuel Kant's Critique of Pure Reason and was closely linked with both Romanticism and the revolutionary politics of the Enlightenment. The most notable thinkers in the movement were Johann Gottlieb Fichte, Friedrich Schelling and Georg Wilhelm Friedrich Hegel, while Friedrich Heinrich Jacobi, Gottlob Ernst Schulze, Karl Leonhard Reinhold and Friedrich Schleiermacher also made major contributions.