- Descartes, René, 1596-1650 (5)
- Gäbe, Lüder, 1927- (3)
- Zekl, Hans Günter (3)
- Buchenau, Artur, 1879- (2)
- Springmeyer, Heinrich (2)
- Gebhardt, Carl, 1881-1934 (1)
- Hammacher, Klaus, 1930- (1)
- Klemmt, Alfred (1)
- Malebranche, Nicolas, 1638-1715 (1)
- Spinoza, Benedictus de, 1632-1677 (1)