133 1770-1831 1818-1883 1888-1985 19thcentury capitalism carl categories(philosophy) communism congresses contributionsinmetaphysicshegel contributionsinphilosophyofcategorieshegel contributionsinpoliticalsciencemarx contributionsinpoliticalscienceschmitt contributionsintheconceptoflibertyhegel georgwilhelmfriedrich georgwilhelmfriedrichcriticalstudies germany hegel history karl law liberty metaphysics philosophers philosophy politicalscience politicstheoriesofhegel state the