| Main Entry | R | I | S | M | B | C | N | |
| I | X | |||||||
| I kuan | X | |||||||
| I proposition | X | |||||||
| I Yuan | X | |||||||
| Ibn Daud | X | |||||||
| Ibn Gabirol | X | |||||||
| Ibn Rushd | X | |||||||
| Ibn Sina | X | |||||||
| Ich | X | |||||||
| Icon | X | |||||||
| Iconoclasm | X | |||||||
| Iconology | X | |||||||
| Idanta | X | |||||||
| Idea | X | X | ||||||
| Ideal | X | |||||||
| Ideal of Reason | X | |||||||
| Ideal Utilitarianism | X | |||||||
| Idealism | X | X | X | X | X | |||
| Ideality | X | |||||||
| Idealization | X | |||||||
| Ideas of Pure Reason | X | |||||||
| ideas, association of | X | |||||||
| Ideatum | X | |||||||
| Identity | X | X | X | |||||
| identity of indiscernibles | X | |||||||
| identity over time | X | |||||||
| identity theory | X | X | X | |||||
| Identity, law of | X | |||||||
| Identity-philosophy | X | |||||||
| identity politics | X | |||||||
| identity, relative | X | |||||||
| identity theory of mind | X | |||||||
| Ideogenetic Theory | X | |||||||
| Ideological | X | |||||||
| Ideology | X | |||||||
| Idiolects | X | |||||||
| Ideo-motor Action | X | X | ||||||
| Idio-psychological Ethics | X | |||||||
| Idol | X | |||||||
| ignorance | ||||||||
| Ignorance | X | X | ||||||
| ignorance, appeal to | X | |||||||
| ignoratiam, arg. ad | X | |||||||
| Ignoratio elenchi | X | X | ||||||
| Illative | X | |||||||
| Illicit importance, fallacy of | X | |||||||
| illicit major | X | |||||||
| illicit minor | X | |||||||
| Illicit process of the major | X | |||||||
| Illicit process of the minor | X | |||||||
| illocutionary act | X | |||||||
| Illumination | X | |||||||
| Illusion | X | |||||||
| Illusionism | X | |||||||
| Image | X | |||||||
| Imageless Thought | X | |||||||
| Imagination | X | X | ||||||
| Imitation | X | |||||||
| Immanence | X | |||||||
| Immanence philosophy | X | |||||||
| Immanent and Transient Activity | X | |||||||
| Immanent Theism | X | |||||||
| Immaterialism | X | |||||||
| Immateriality | X | |||||||
| Immediacy | X | |||||||
| Immediate inference | X | X | ||||||
| Immoralism | X | X | ||||||
| immortalism | X | |||||||
| Immortality | X | |||||||
| Immutability | X | X | ||||||
| impartiality | X | X | ||||||
| imperatives, categorial and hypothetical | X | |||||||
| imperativism | X | |||||||
| Impersonalism | X | |||||||
| Implication | X | X | ||||||
| Implication (Impl.) | X | |||||||
| implicature | X | |||||||
| implicit memory | X | |||||||
| Importation | X | |||||||
| Imposition | X | |||||||
| Impredicative definition | X | |||||||
| Impression | X | |||||||
| Impressionism | X | |||||||
| In and for itself | X | |||||||
| In esse, in intellects in re | X | |||||||
| In fieri | X | |||||||
| incommensurability | X | |||||||
| incompatibilism, (nondetermistic) theories of free will | X | |||||||
| incompatibilism, arguments for | X | |||||||
| Incomplete symbol | X | |||||||
| Inconceivability | X | |||||||
| Inconsistency | X | |||||||
| Incontinence | X | X | ||||||
| incorrigible | X | |||||||
| Indefinite potentiality, error of | X | |||||||
| Independence | X | |||||||
| Indeterminism | X | X | ||||||
| Index | X | |||||||
| indexical | X | X | ||||||
| Indian Aesthetics | X | |||||||
| Indian Ethics | X | |||||||
| Indian Philosophy | X | |||||||
| Indifferents | X | |||||||
| Indirect proof | X | X | ||||||
| Indiscernibles, Principle of | X | |||||||
| Individual | X | |||||||
| individual constant | X | |||||||
| Individual Psychology | X | |||||||
| individual variable | X | |||||||
| Individualism | X | X | X | X | ||||
| individualism, methodological | X | |||||||
| Individuation | X | |||||||
| Indriya | X | |||||||
| indubitable | X | |||||||
| Induction | X | X | X | X | ||||
| Induction, complete or mathematical | X | |||||||
| ineffable | X | |||||||
| infallibility | X | |||||||
| infanticide | X | |||||||
| Inference | X | X | ||||||
| inference, rules of | X | |||||||
| infidels | X | |||||||
| Infima species | X | |||||||
| Infinite | X | |||||||
| infinite regress | X | |||||||
| Infinitesimal | X | |||||||
| Infinity | X | X | ||||||
| Infinity, axiom of | X | |||||||
| informal fallacy | X | |||||||
| informal logic | X | |||||||
| information technology | ||||||||
| information technology, phenomenological approaches to ethics and | X | |||||||
| informative use of language | X | |||||||
| Ingarden, Roman | X | X | ||||||
| ingenium | X | |||||||
| Ingression | X | |||||||
| injustice | X | |||||||
| Innate Ideas | X | X | ||||||
| Innatism | X | |||||||
| Inner sense | X | |||||||
| Innervation, Sensation of | X | |||||||
| inquisition | X | |||||||
| insanity | X | |||||||
| Insolubilia [insolubles] | X | X | ||||||
| Inspection | X | |||||||
| Institutions | X | |||||||
| Instrumental theory | X | |||||||
| Instrumental value | X | |||||||
| Instrumentalism | X | X | X | |||||
| Integral | X | |||||||
| Integration | X | |||||||
| integrity | X | |||||||
| Intellect | X | X | ||||||
| Intellectual virtues | X | |||||||
| Intellectualism | X | X | ||||||
| Intelligence | X | |||||||
| Intelligence, creative | X | |||||||
| Intelligible | X | |||||||
| intension | X | |||||||
| Intension and extension | X | |||||||
| intensional transitive verbs | X | |||||||
| Intensive quantity | X | |||||||
| Intent | X | |||||||
| Intention | X | X | ||||||
| Intentional Theory of Mind | X | |||||||
| Intentionalism | X | X | X | |||||
| Intentionality | X | X | X | X | ||||
| Intentionality, in ancient philosophy | X | |||||||
| intentionality, derived | X | |||||||
| Intentionally | X | |||||||
| Interaction Theory | X | |||||||
| Interactionism | X | X | ||||||
| Interest | X | |||||||
| interest (in psychology) | X | |||||||
| Internal | X | |||||||
| internalism | X | |||||||
| Interoceptor | X | |||||||
| Intersubjective | X | |||||||
| Intersubjective cognition | X | |||||||
| Intersubjective intercourse | X | |||||||
| intertextuality | X | |||||||
| interventionism | X | |||||||
| Intra-ordinal Laws | X | |||||||
| Intrinsic | X | X | ||||||
| intrinsic vs. extrinsic properties | X | |||||||
| Intrinsic goodness | X | |||||||
| intrinsicism | X | |||||||
| Introception | X | |||||||
| Introjection | X | |||||||
| Introspection | X | |||||||
| Introspectionism | X | |||||||
| Introspective Method | X | |||||||
| Intuitio | X | |||||||
| intuition | ||||||||
| Intuition | X | X | X | |||||
| intuitionism | X | X | ||||||
| Intuitionism (mathematical) | X | |||||||
| Intuitionism (philosophical) | X | |||||||
| Intuitive cognition | X | |||||||
| invalid | X | |||||||
| Invariant | X | |||||||
| Invention | X | |||||||
| Ionian School of Philosophy | X | |||||||
| Irigaray, Luce | X | |||||||
| irony | X | |||||||
| Irony, Socratic | X | |||||||
| irrationalism | X | |||||||
| Irregularity, (Theory of) | X | |||||||
| Irrelevant | X | |||||||
| irrelevant conclusion | X | |||||||
| Is, Isa, Isana, Isvara | X | |||||||
| Islam | X | X | ||||||
| ism | X | |||||||
| Isolation by Varying Concomitants | X | |||||||
| Isomorphism | X |