| Main Entry | R | I | S | M | B | C | N |
| Caird, Edward | X | X | |||||
| Caitanya | X | ||||||
| Calculus | X | ||||||
| Calkins, Mary Whiton | X | ||||||
| Callicles and Thrasymachus | X | ||||||
| Cambridge Platonists | X | X | X | ||||
| Cambridge School | X | ||||||
| Camenes | X | ||||||
| Camestres | X | ||||||
| Campanella, Tommaso | X | ||||||
| Camus, Albert | X | ||||||
| Canon | X | ||||||
| Cantor, Georg (Ferdinand Ludwig Philipp) | X | X | |||||
| Capacity | X | ||||||
| capital punishment | X | ||||||
| Capitalism | X | X | |||||
| Capitalists | X | ||||||
| Cardinal number | X | ||||||
| Cardinal Point and Value | X | ||||||
| Cardinal virtues | X | ||||||
| Carlyle, Thomas | X | ||||||
| Carnap, Rudolf | X | X | X | ||||
| Carneades | X | X | X | X | |||
| Cartesian dualism | X | ||||||
| Cartesian skepticism | X | ||||||
| Cartesianism | X | X | X | ||||
| Cassirer, Ernst | X | X | X | ||||
| Casualism | X | ||||||
| Casuistic | X | ||||||
| Casuistry | X | X | X | ||||
| Catechetic | X | ||||||
| Categorematic | X | ||||||
| Categorial | X | ||||||
| Categorical (Judgment) | X | ||||||
| Categorical Imperative | X | X | X | ||||
| categorical logic | X | ||||||
| categorical proposition | X | ||||||
| categorical syllogism | X | ||||||
| categorical term | X | ||||||
| categories | X | ||||||
| Category | X | X | X | X | |||
| category mistake | X | ||||||
| Category of Unity | X | ||||||
| category-theory | X | ||||||
| Catharsis | X | X | |||||
| Catvari arya-satyani | X | ||||||
| Causa sui | X | ||||||
| Causality | X | ||||||
| causation | X | ||||||
| causation, backward | X | ||||||
| causation, causal process | X | ||||||
| causation, in the law | X | ||||||
| causation, counterfactual | X | ||||||
| causation, Medieval theories of | X | ||||||
| causation, mental | X | ||||||
| causation, metaphysics of | X | ||||||
| causation, probabilistic | X | ||||||
| causation and manipulability | X | ||||||
| Cause | X | X | |||||
| cause / effect | X | ||||||
| causes, the four | X | ||||||
| Cause-theory (of mind, body) | X | ||||||
| Cavendish, Margaret | X | ||||||
| Celarent | X | ||||||
| censorship, pornography and | X | ||||||
| Centre-theory | X | ||||||
| Certainty | X | ||||||
| Certitude | X | X | |||||
| Cesare | X | ||||||
| chain of being | X | ||||||
| Ch'an wei | X | ||||||
| Chance | X | ||||||
| Ch'ang | X | ||||||
| Chang Heng-ch'u | X | ||||||
| Ch'ang sheng | X | ||||||
| Change, Philosophy of | X | X | |||||
| Chaos | X | ||||||
| Character | X | X | |||||
| Character, moral | X | ||||||
| Characteristic | X | ||||||
| Characteristica Universalis | X | ||||||
| Characterology | X | ||||||
| Characters | X | ||||||
| Charron, Pierre | X | ||||||
| Chen jen | X | ||||||
| Chen ts'a | X | ||||||
| Chen yun | X | ||||||
| Ch'eng | X | ||||||
| Cheng hsin | X | ||||||
| Ch'eng I-ch'uan | X | ||||||
| Cheng ming | X | ||||||
| Ch'eng ming | X | ||||||
| Ch'eng Ming-tao | X | ||||||
| Chi | X | ||||||
| Ch'i | X | ||||||
| Ch'i | X | ||||||
| Ch'i chia | X | ||||||
| Ch'i hsueh | X | ||||||
| Ch'i wu | X | ||||||
| Chia | X | ||||||
| Chiao | X | ||||||
| Chieh hsuan | X | ||||||
| Ch'ien | X | ||||||
| Chien ai | X | ||||||
| Chien pai | X | ||||||
| Chih | X | ||||||
| Chih chih | X | ||||||
| Chih jen | X | ||||||
| Chih kuo | X | ||||||
| Chih shan | X | ||||||
| Childhood, the philosophy of | X | ||||||
| Children, philosophy for | X | ||||||
| Chiliasm | X | ||||||
| Chin | X | ||||||
| Ch'in | X | ||||||
| Chin hsin | X | ||||||
| Chin tan | X | ||||||
| Chinese Philosophy | X | ||||||
| Chinese Room Argument | X | X | X | ||||
| Ching | X | ||||||
| Ch'ing | X | ||||||
| Ch'ing (dynasty) philosophy | X | ||||||
| Ching shen | X | ||||||
| Chisholm, Roderick | X | ||||||
| Chiu | X | ||||||
| Chiu ch'ou | X | ||||||
| Ch'iung li | X | ||||||
| Choice | X | ||||||
| Choice, axiom of | X | ||||||
| Chomsky, Noam | X | X | |||||
| Chou Tun-i | X | ||||||
| Chrematistiscs | X | ||||||
| Christian doctrine | X | ||||||
| Christian theology, philosophy and | X | ||||||
| Christianity | X | ||||||
| Christology | X | ||||||
| Chrysippus | X | X | X | ||||
| Chu | X | ||||||
| Chu Hsi | X | ||||||
| Chu i wu shih | X | ||||||
| Ch'uan | X | ||||||
| Ch'uan hsing | X | ||||||
| Ch'uan sheng | X | ||||||
| Chuang Tzu | X | ||||||
| Chun tu | X | ||||||
| Chung | X | ||||||
| Chung yung | X | ||||||
| Church, Alonzo | X | X | |||||
| Churchland, Patricia | X | ||||||
| Churchland, Paul | X | ||||||
| Church-Turing Thesis | X | ||||||
| Cicero | |||||||
| Cicero, Marcus Tullius | X | X | X | ||||
| Circular evidence | X | ||||||
| circularity | X | ||||||
| Cit | X | ||||||
| Citi | X | ||||||
| Citta | X | ||||||
| civil rights | X | ||||||
| Cixous, Hélčne | X | ||||||
| Claims | X | ||||||
| Clarification | X | ||||||
| Clarke, Samuel | X | X | |||||
| Class | X | X | |||||
| Class concept | X | ||||||
| Class consciousness | X | ||||||
| Class struggle | X | ||||||
| Classic | X | ||||||
| Classicism | X | X | |||||
| Classification | X | ||||||
| Cleanthes | X | X | |||||
| clear and distinct | X | ||||||
| Clearness | X | ||||||
| Clement of Alexandria | X | ||||||
| Clifford, W. K. | X | ||||||
| closure principles | X | ||||||
| Cockburn, Catherine | X | X | |||||
| Co-conscious, The | X | ||||||
| Coenaesthesis | X | ||||||
| Cogitatio | X | ||||||
| Cogito | X | ||||||
| Cogito Argument, The | X | ||||||
| cogito ergo sum | X | ||||||
| Cognition | X | X | |||||
| Cognitive Meaning, Cognitive Sentence | X | ||||||
| cognitive science | X | X | X | ||||
| cognitivism | X | ||||||
| cognitivism vs. non-cognitivism, moral | X | ||||||
| cognize | X | ||||||
| Cognoscendum | X | ||||||
| Cohen, Hermann | X | ||||||
| Cohen, Morris Raphael | X | ||||||
| coherence | X | ||||||
| coherence theory | X | ||||||
| Coherence Theory of Truth | X | ||||||
| coherentism | X | ||||||
| Coleridge, Samuel Taylor | X | ||||||
| Collective and Distributive Properties | X | ||||||
| collectivism | X | X | |||||
| Colligation | X | ||||||
| Collingwood, R.G. | X | ||||||
| Collins, Anthony | X | ||||||
| color | X | X | |||||
| color perception, | X | ||||||
| Combination | X | ||||||
| Combination of Ideas | X | ||||||
| Combinatory Logic | X | ||||||
| Commentator, The | X | ||||||
| common knowledge | X | ||||||
| Common Sense | X | X | |||||
| Common Sense Realism | X | ||||||
| Common Sensibles | X | ||||||
| communalism | X | ||||||
| Communication | X | ||||||
| Communism | X | X | X | ||||
| communitarianism | X | X | |||||
| Commutation (Comm.) | X | ||||||
| Commutative law | X | ||||||
| Comparison | X | ||||||
| Compathy | X | ||||||
| compatibilism and incompatibilism | X | X | X | ||||
| complement | X | ||||||
| Completeness | X | X | |||||
| Complex | X | ||||||
| complex question | X | ||||||
| Complication | X | ||||||
| Composite | X | ||||||
| Composite idea | X | ||||||
| Composition | X | ||||||
| Composition and Division, fallacies of | X | ||||||
| composition, fallacy of | X | ||||||
| compositionality | X | ||||||
| Compossibility | X | X | |||||
| Compound | X | ||||||
| Compound Theory of Mind | X | ||||||
| Comprehension | X | ||||||
| Compresence | X | ||||||
| computability and complexity | X | ||||||
| computation | X | ||||||
| computational architecture | X | ||||||
| computational models | X | ||||||
| computing, the modern history of | X | ||||||
| computing and moral responsibility | X | ||||||
| Comte, Auguste | X | X | |||||
| Conation | X | ||||||
| Conatus | X | ||||||
| Conceivability | X | ||||||
| Concept | X | X | X | ||||
| Conception | X | ||||||
| Conceptual Realism | X | ||||||
| conceptual role semantics | X | ||||||
| Conceptualism | X | X | X | X | |||
| conclusion | X | ||||||
| Concomitance | X | ||||||
| concomitant variation | X | ||||||
| Concrete | X | ||||||
| Concrete Universal | X | ||||||
| Concretion | X | ||||||
| concretism | X | ||||||
| Concupiscence | X | ||||||
| Concurrence | X | ||||||
| Concursus dei (or divinus) | X | ||||||
| condemnation of 1277 | X | ||||||
| Condignity | X | ||||||
| Condillac, Étienne Bonnot de | X | X | X | X | |||
| Condition | X | ||||||
| Conditional | X | X | |||||
| Conditionals | X | ||||||
| Conditional Immortality | X | ||||||
| Conditional Morality | X | ||||||
| Conditioned Reflex | X | ||||||
| Conditioned Response | X | ||||||
| Conditiones sine quibus non | X | ||||||
| Conduct | X | ||||||
| Configuration | X | ||||||
| Configurationism | X | ||||||
| Confirmation, Confirmable | X | X | |||||
| Conflict | X | ||||||
| Confucianism | X | X | |||||
| Confucius | X | X | |||||
| Confused | X | ||||||
| Confusion | X | ||||||
| Congruity | X | ||||||
| Conjugation | X | ||||||
| Conjunction | X | X | |||||
| Conjunction (Conj.) | X | ||||||
| connectionism | X | X | |||||
| connectionism, history of | X | ||||||
| connective | X | ||||||
| Connexity | X | ||||||
| Connotation | X | X | |||||
| Conscience | X | X | X | ||||
| conscience, Medieval theories of | X | ||||||
| Conscientalism | X | ||||||
| Conscious | X | ||||||
| Conscious Illusion Theory | X | ||||||
| Consciousness | X | X | X | X | X | ||
| Consciousness and intentionality | X | ||||||
| consciousness, access | X | ||||||
| consciousness, animal | X | ||||||
| Consciousness, Field of | X | ||||||
| Consciousness, higher order theories of | X | ||||||
| consciousness, phenomenal | X | ||||||
| consciousness, representational theories of | X | ||||||
| consciousness, unity of | X | ||||||
| Consciousness-in-general | X | ||||||
| Consectarium | X | ||||||
| Consensus gentium | X | ||||||
| Consent | X | ||||||
| Consentience | X | ||||||
| Consequence | X | ||||||
| Consequence-logic | X | ||||||
| Consequent | X | X | |||||
| consequentialism | X | X | X | X | |||
| consequentialism, rule | X | ||||||
| conservation biology | X | ||||||
| Consilience | X | ||||||
| Consistency | X | X | |||||
| Consistency proofs | X | ||||||
| Constant | X | ||||||
| Constituted | X | ||||||
| Constitution | X | ||||||
| Constitutionalism | X | ||||||
| Constitutive | X | ||||||
| Construct, Imaginative | X | ||||||
| Construction | X | ||||||
| Construction, Psychological | X | ||||||
| Constructive Dilemma (C.D.) | X | ||||||
| constructivism | X | ||||||
| Contemplation | X | ||||||
| Content of Consciousness | X | ||||||
| content, mental | X | ||||||
| Contextual definition | X | ||||||
| contextualism | X | ||||||
| Contiguity, Association by | X | ||||||
| Continence | X | X | |||||
| Contingency | X | ||||||
| contingent and necessary | X | ||||||
| Continuant | X | ||||||
| Continuity | X | ||||||
| continuum hypothesis | |||||||
| Continuum, Sensory | X | ||||||
| Contract, Social | X | ||||||
| contractarianism | X | ||||||
| Contraction of a genus or species | X | ||||||
| Contradictio in adjecto | X | ||||||
| contradiction | X | ||||||
| Contradiction, law of | X | ||||||
| contradictories | X | ||||||
| Contrapletes | X | ||||||
| contraposition | X | ||||||
| Contraposition | X | ||||||
| Contraries | X | X | |||||
| Contrast | X | ||||||
| Contrast | X | ||||||
| Contrast, Association by | X | ||||||
| Convention | X | ||||||
| Conventionalism | X | X | X | ||||
| Converse | X | ||||||
| converse accident | X | ||||||
| conversion | X | ||||||
| converting the conditional | X | ||||||
| Conway, Lady Anne | X | X | |||||
| Coordinates | X | ||||||
| Copernicus, Nicolas | X | X | X | ||||
| Copula | X | ||||||
| Cordemoy, Géraud de | X | X | |||||
| Corollary | X | ||||||
| Corporative State | X | ||||||
| corpuscularianism | X | ||||||
| Corrective Justice | X | ||||||
| Correlation, Sensory | X | ||||||
| Correspondence | X | ||||||
| correspondence theory | X | X | |||||
| Correspondence Theory of Truth | X | ||||||
| cosmism | X | ||||||
| Cosmogony | X | ||||||
| Cosmological argument | X | X | X | ||||
| Cosmology | X | X | |||||
| cosmology, and theology | X | ||||||
| cosmology, methodological debates in the 1930s and 1940s | X | ||||||
| Cosmopolis | X | ||||||
| Cosmopolitanism | X | ||||||
| Cosmos | X | ||||||
| Cosmothetic Idealism | X | ||||||
| counter-example | X | ||||||
| counterfactual | X | ||||||
| Counterpoint | X | ||||||
| Counting | X | ||||||
| Courage | X | X | |||||
| Cournot, Antoine Augustin | X | ||||||
| Cousin, Victor | X | ||||||
| CratyIus of Athens | X | ||||||
| Creation | X | ||||||
| creationism | X | X | X | ||||
| Creative Theory of Perception | X | ||||||
| creativity | X | ||||||
| Credo quia absurdum est | X | ||||||
| Credo ut intelligam | X | ||||||
| creed | X | ||||||
| creed, Apostles' | X | ||||||
| creed, Athanasian | X | ||||||
| creed, Nicene | X | ||||||
| Creighton, James Edwin | X | ||||||
| Crescas, Don Hasdai | X | ||||||
| Crescas, Hasdai | X | ||||||
| criminal law, theories of | X | ||||||
| Criterion | X | X | |||||
| Criterion ethical | X | ||||||
| Critical Idealism | X | ||||||
| Critical Monism | X | ||||||
| Critical Realism | X | ||||||
| critical theory | X | X | |||||
| Criticism | X | ||||||
| Critique of Pure Reason | X | ||||||
| Croce, Benedetto | X | X | |||||
| Cross-Roads Hypothesis | X | ||||||
| Cudworth, Ralph | X | X | X | ||||
| Culture | X | ||||||
| Cumberland, Richard | X | X | |||||
| Curry's Paradox | X | ||||||
| Cusa, Nicholas of | X | X | |||||
| Customs | X | ||||||
| Cynic School | X | ||||||
| cynicism | X | X | |||||
| Cynics | X | ||||||
| Cyrenaic School | X | ||||||
| Cyrenaics | X |