général By Pitouro Period: 1632 to 1677 Baruch Spinoza Period: 1724 to 1804 Emmanuel Kant Period: 1770 to 1831 Georg W. F. Hegel Period: 1804 to 1872 Ludwig Feuerbach Period: 1818 to 1883 Karl Marx Period: 1820 to 1895 Friedrich Engels Period: 1885 to 1971 Georg Lukacs Period: 1903 to 1969 Theodor W. Adorno Period: 1942 to 2018 Moishe Postone