Cassiodorus: on soul and body, 103-104. Cause and Effect; meaning of words, 118-120; relation of mental and material not causal, 121-126; see also, 132; cause and effect, activity and passivity, 159 ff. Child: its knowledge of the world, 18-19. Cicero: Pythagoras' use of word "philosopher," 2; on immortality, 32. Clifford, W. K.: on infinite divisibility of space, 79-80; on other minds, 135; on mind-stuff, 144-146; his panpsychism, 197-198; his parallelism, 308-309; references on mind-stuff, 309. Common Sense: notions of mind and body, 106 ff.; Reid's doctrine, 171-174; common sense ethics, 236-240. Common Thought: what it is, 18-20. Concomitance: see Mind and Body. Copernican System: 282. Cornelius: on metaphysics, 249. Creighton: 314. Critical Empiricism: the doctrine, 218-219. Critical Philosophy: outlined, 175-180; criticised, 211-218; references, 311. Croesus: 1. Democritus: doctrine referred to, 4; his place in the history of philosophy, 5; on the soul, 101-102; his materialism examined, 194-195. Descartes: conception of philosophy, 10; on mind and body, 105-106; also, 119; on animal automatism, 141-142; on the external world, 163-168; on substance, 198; his rationalism, 206-209; the "natural light," 208; his attempt at a critical philosophy, 214; his rules of method, 214; provisional rules of life, 301-302; reference given, 306; reference to his automatism, 308; references to the "Meditations," 312. Determinism: 155-159; references, 309-310. Dewey, John: 312-314. Dogmatism: Kant's use of term, 211-212. Dualism: what, 193; varieties of, 202-204; the present volume dualistic, 204; Hamilton's, 312.