Title: Activity and ground
Subjects: Fichte, johann gottlieb, 1762-1814, Hegel, georg wilhelm friedrich, 1770-1831, Schelling, friedrich wilhelm joseph von, 1775-1854
People: Johann Gottlieb Fichte (1762-1814), Friedrich Wilhelm Joseph von Schelling (1775-1854), Georg Wilhelm Friedrich Hegel (1770-1831)