- Hegel, Georg Wilhelm Friedrich, 1770-1831 (6)
- Apel, Karl-Otto, 1922- (3)
- Fichte, Johann Gottlieb, 1762-1814 (3)
- Scheler, Max, 1874-1928 (3)
- Schopenhauer, Arthur, 1788-1860 (3)
- Brentano, Franz Clemens, 1838-1917 (2)
- Ebeling, Hans, 1906- (2)
- Gadamer, Hans Georg, 1900- (2)
- Habermas, Jürgen, 1929- (2)
- Hartmann, Nicolai, 1882-1950 (2)
- Husserl, Edmund, 1859-1938 (2)
- Höffe, Otfried, 1943- (2)
- Kuhlmann, Wolfgang, 1939- (2)
- Meggle, Georg (2)
- Schwemmer, Oswald, 1941- (2)
- Von Hildebrand, Dietrich, 1889- (2)
- Weber, Max, 1864-1920 (2)
- Adrian, Michael (1)
- Ansén, Reiner, 1961- (1)
- Aristotle (1)
- Bien, Günther, 1936- (1)
- Brumlik, Micha, 1947- (1)
- Brunner, Emil, 1889-1966 (1)
- Bubner, Rüdiger, 1941- (1)
- Butler, Judith P. (1)
- Böhler, Dietrich (1)
- Celikates, Robin (1)
- Cohen, Hermann, 1842-1918 (1)
- Dilthey, Wilhelm, 1833-1911 (1)
- Ebeling, Hans, 1939- (1)
- Edelstein, Wolfgang (1)
- Euchner, Walter (1)
- Gargano, Antonio (1)
- Garve, Christian, 1742-1798 (1)
- Gert, Bernard, 1934- (1)
- Gosepath, Stefan, 1959- (1)
- Grewendorf, Günther (1)
- Grotsch, Klaus (1)
- Hare, R. M. (Richard Mervyn) (1)
- Hegselmann, Rainer (1)
- Henrich, Dieter, 1927- (1)
- Hoffmeister, Johannes (1)
- Honneth, Axel, 1949- (1)
- Hoppe, Hansgeorg (1)
- Horster, Detlef, 1942- (1)
- Hösle, Vittorio, 1960- (1)
- Institut für Sozialforschung (Frankfurt am Main, Germany) (1)
- Kambartel, Friedrich (1)
- Kaulbach, Friedrich (1)
- Kersting, Wolfgang (1)
- Klein, Joseph, 1896- (1)
- Kraus, Oskar, 1872-1942 (1)
- Krämer, Hans Joachim, 1929- (1)
- Kussäther, Helmut (1)
- Langbehn, Claus, 1970- (1)
- Lauth, Reinhard, 1919- (1)
- Luhmann, Niklas, 1927-1998 (1)
- Mandeville, Bernard, 1670-1733 (1)
- Mayer-Hillebrand, Franziska (1)
- Melle, Ullrich (1)
- Michel, Karl Markus, 1929- (1)
- Moldenhauer, Eva (1)
- Müller, Peter (1)
- Nunner-Winkler, Gertrud (1)
- Peucker, Henning (1)
- Plack, Arno, 1930- (1)
- Rosenthal, Walter, 1929- (1)
- Schlick, Moritz, 1882-1936 (1)
- Schmid, Peter A. (1)
- Schnädelbach, Herbert, 1936- (1)
- Schulte, Joachim (1)
- Streithofen, Heinrich Basilius (1)
- Suabedissen, David Theodor August, 1773-1835 (1)
- Taylor, Charles (1)
- Taylor, Charles, 1931- (1)
- Tugendhat, Ernst, 1930- (1)
- Verweyen, Hansjürgen, 1936- (1)
- Webb, David (1)
- Weisser-Lohmann, Elisabeth (1)
- Zahn, Manfred (1)