[Coehoorn, Baron van], a Dutch military engineer; fortified Namur, and defended it against Vauban; was successful in besieging many towns during the war of the Spanish Succession; author of a treatise on fortification (1641-1704).
[Coelebs] (a bachelor), the title of a novel by Hannah More.
[Coele-Syria] (the Howe of Syria), or El Buka'a, a valley between the Lebanons, about 100 m. long by 10 m. broad.
[Coelian], one of the seven hills of Rome, S. of the Capitoline.
[Coello], the name of two Spanish painters in the 16th and 17th centuries, whose works are in the Escurial.
[Coeur, Jacques], a rich merchant of Bourges, financier to Charles VII., for whom he provided the sinews of war against the English, but who banished him at the instigation of detractors; he was reinstated under Louis XI. (1400-1456).
[Coeur de Lion] (lion-hearted), a surname on account of their courage given to Richard I. of England (1151), Louis VIII. of France (1181), and Boselas I. of Poland (960).
[Cogito, ergo sum], "I think, therefore I am." Descartes' principle of certainty, and on which, as on a stable basis, he reared his whole philosophy. See [Descartes]. "Alas, poor cogitator," Carlyle exclaims, "this takes us but a little way. Sure enough, I am; and lately was not; but Whence? How? Whereto?"
[Cognac] (17), a French town in the dep. of Charente, birthplace of Francis I.; famous for its vines and the manufacture of brandy.