Cacciari, Massimo (1944)

Calcidius/Chalcidius (4^th cent.)

Calvinus, Iohannes/Cauvin/Calvin, Jean (1509-1564)

Camillo, Giulio Delmino (1480-1544)

Campanella, Tommaso (1568-1639)

Cardano, Girolamo/Cardanus, Hieronymus Mediolanensis (1501-1576)

Cassiodorus, Flavius Magnus Aurelius (ca. 490-585)

Castiglione, Baldassare (1478-1529)

Catharina Senensis/Caterina da Siena, S. (1347-1380)

Cattaneo, Carlo (1801-1896)

Celsus, Aulus Cornelius (25 BC-50)

Celsus (Platonicus) (2^nd cent.)

Charron, Pierre (1541-1603)

Châtelet, Gabrielle-Émilie Le Tonnelier de Breteuil du (1706-1749)

Chomsky, Noam (1928)

Cicero, Marcus Tullius (106-43 B.C.)

Clara Assisiensis/Chiara di Assisi, S. (1193/4-1253)

Cleanthes ( 304-233 B.C.)

Clemens Alexandrinus, S. (ca. 150-ca. 215)

Clemens Romanus, S. (unknow date of birth-ca. 98)

Cohen, Morris Raphael (1880-1947)

Colonna, Vittoria (1490-1547)

Colli, Giorgio (1917-1979)

Comenius, Iohannes Amos/Komenský Jan Amos (1592-1670)

Comte, Auguste (1798-1857)

Condorcet, Marie Jean Antoine Nicolas de Caritat, de (1743-1794)

Confucius (551-479 B.C.)

Croce, Benedetto (1866-1952)

Cusanus, Nicolaus/Krebs, Nikolaus (1400-1464)