1724-1804 1770-1831 1775-1854 1859-1938 18thcentury aesthetics congresses contributionsinaestheticskant contributionsinsubjectivityhegel contributionsinsubjectivityhusserl contributionsinsubjectivityschelling edmund friedrichwilhelmjosephvon georgwilhelmfriedrich german history immanuel subject(philosophy) subjectivity transcendentalism