| Theodor Adorno Quotes | 1903 - 1969 |
| Martin Buber Quotes | 1878 - 1965 |
| Rudolf Carnap Quotes | 1891 - 1970 |
| Meister Eckhart Quotes | 1260 - 1328 |
| Friedrich Engels Quotes | 1820 - 1895 |
| Johann Gottlieb Fichte Quotes | 1762 - 1814 |
| Hans-Georg Gadamer Quotes | 1900 - 2002 |
| Jurgen Habermas Quotes | 1929 - |
| Georg Wilhelm Friedrich Hegel Quotes | 1770 - 1831 |
| Martin Heidegger Quotes | 1889 - 1976 |
| Eugen Herrigel Quotes | 1885 - 1955 |
| Edmund Husserl Quotes | 1859 - 1938 |
| Immanuel Kant Quotes | 1724 - 1804 |
| Walter Kaufmann Quotes | 1921 - 1980 |
| Gottfried Leibniz Quotes | 1646 - 1716 |
| Herbert Marcuse Quotes | 1898 - 1979 |
| Karl Marx Quotes | 1818 - 1883 |
| Moses Mendelssohn Quotes | 1729 - 1786 |
| Friedrich Nietzsche Quotes | 1844 - 1900 |
| Friedrich von Schelling Quotes | 1775 - 1854 |
| Moritz Schlick Quotes | 1882 - 1936 |
| Arthur Schopenhauer Quotes | 1788 - 1860 |
| Oswald Spengler Quotes | 1880 - 1936 |
| Max Stirner Quotes | 1806 - 1856 |
| Leo Strauss Quotes | 1899 - 1973 |
