This article examines the sources, structures and the possible meaning of Clausewitz's theory. The paper suggests an interpretation of Vom Kriege and provides a comparison with Goethe and Fichte. It points out that Clausewitz set the rationale of an integral politics theory, reintroducing human nature as opposed to culture and creating a classical conceptual order prevailing over Romanticism, as well as forging essential concepts for a critical view of liberalism.