| Claudius, Hermann | (1878 - 1980) | 1 | Zitat |
| Claudius, Matthias | (1740 - 1815) | 11 | Zitate |
| Clausewitz, Carl | (1780 - 1831) | 10 | Zitate |
| Clay, Henry | (1777 - 1852) | 1 | Zitat |
| Clemenceau, Georges Benjamin | (1841 - 1929) | 8 | Zitate |
| Clement, Wolfgang | (*1940) | 2 | Zitate |
| Clerq, Willem | (1795 - 1844) | 2 | Zitate |
| Cleveland, Grover | (1837 - 1908) | 8 | Zitate |
| Cleyre, Voltairine | (1866 - 1912) | 5 | Zitate |
| Clinton, Bill | (*1946) | 9 | Zitate |
| Clinton, Hillary | (*1947) | 5 | Zitate |
| Close, Glenn | (*1947) | 2 | Zitate |
| Cobain, Kurt | (1967 - 1994) | 2 | Zitate |
| Cobb, Irvin S. | (1876 - 1944) | 2 | Zitate |
| Cobbett, William | (1763 - 1835) | 2 | Zitate |
| Cocteau, Jean | (1889 - 1963) | 17 | Zitate |
| Cohen, Leonhard | (1934 - 2016) | 1 | Zitat |
| Cohn, Ruth | (1912 - 2010) | 1 | Zitat |
| Cohn-Bendit, Daniel | (*1945) | 2 | Zitate |
| Coke, Edward | (1552 - 1634) | 1 | Zitat |
| Cole, Nat King | (1919 - 1965) | 2 | Zitate |
| Cole, Thomas | (1801 - 1848) | 1 | Zitat |
| Coleman, Bessie | (1892 - 1926) | 1 | Zitat |
| Coleridge, Samuel | (1772 - 1834) | 7 | Zitate |
| Colette, Sidonie-Gabrielle | (1873 - 1954) | 3 | Zitate |
| Collier, Robert | (1885 - 1950) | 14 | Zitate |
| Collins, Gary | (1938 - 2012) | 1 | Zitat |
| Collins, John Churton | (1848 - 1908) | 4 | Zitate |
| Collins, Phil | (*1951) | 1 | Zitat |
| Collins, Wilkie | (1824 - 1889) | 3 | Zitate |
| Comenius, Johann | (1592 - 1670) | 3 | Zitate |
| Commoner, Barry | (1917 - 2012) | 1 | Zitat |
| Comte, Auguste | (1798 - 1857) | 5 | Zitate |
| Comte, Isidore | (1798 - 1857) | 1 | Zitat |
| Conant, James Bryant | (1893 - 1978) | 1 | Zitat |
| Condorcet, Marquis | (1743 - 1794) | 4 | Zitate |
| Cone, Fairfax Mastick | (1903 - 1977) | 1 | Zitat |
| Congreve, William | (1670 - 1729) | 3 | Zitate |
| Connery, Sean | (*1930) | 2 | Zitate |
| Connolly, Cyril | (1903 - 1974) | 1 | Zitat |
| Connolly, James | (1868 - 1916) | 1 | Zitat |
| Conquest, Robert | (1917 - 2015) | 1 | Zitat |
| Conrad, Joseph | (1857 - 1924) | 16 | Zitate |
| Constable, John | (1776 - 1837) | 1 | Zitat |
| Constantine, Eddie | (1917 - 1993) | 1 | Zitat |
| Cook, James R. | (1728 - 1779) | 1 | Zitat |
| Cooke, Alistair | (1908 - 2004) | 3 | Zitate |
| Coolidge, Calvin | (1872 - 1933) | 30 | Zitate |
| Cooper, Gary | (1901 - 1961) | 1 | Zitat |
| Cooper, James Fenimore | (1789 - 1851) | 7 | Zitate |