Experience (v. _Cause_ A, 23-33); opposition of reason and experience usual, but really erroneous and superficial, 36 n. Infallible, may be regarded as proof, 87 (v. _Miracles_); all the philosophy and religion in the world cannot carry us beyond the usual course of experience, 113. Extension 50; a supposed primary quality, 122. Faith 101, 132. Fiction and fact (v. _Cause_ C), 39 f. Future inference to, from past, 29 (v. _Cause_ A). General ideas, do not really exist, but only particular ideas attached to a general term, 125 n. Geography mental, 8. Geometry propositions of certain, as depending only on relations of ideas not on existence of objects, 20; gives no knowledge of ultimate causes: only applies laws discovered by experience, 27. God idea of, 14; no idea of except what we learn from reflection on our own faculties, 57; theory that God is cause of all motion and thought, causes being only occasions of his volition, 54-57; by doctrine of necessity either there are no bad actions or God is the cause of evil, 78-81. Veracity of, appealed to, 120. And creation of matter, 132 n. v. _Providence_, 102-115; _Scepticism_, 116-132. Golden age, 107. Gravity 26. Habit (v. _Custom_, _Cause_ B). History use of, 65. Human nature, inconstancy a constant character of, 68. Ideas A. _Origin of_, 11-17. Perceptions divided into impressions and ideas, 11-12; the mind can only compound the materials derived from outward or inward sentiment, 13 (cf. 53); all ideas resolvable into simple ideas copied from precedent feelings, 14; deficiency in an organ of sensation produces deficiency in corresponding idea, 15-16; suspected ideas to be tested by asking for the impression from which it is derived, 17 (cf. 49); idea of reflection, 51; general ideas, 135 n; innate ideas, 19 n; power of will over ideas, 53. B. _Association of_, 18-19. Ideas introduce each other with a certain degree of method and regularity, 18; only three principles of association, viz. Resemblance, Contiguity, and Cause or Effect, 19; contrariety, 19 n; production of belief by these principles, 41-43. C. Correspondence of ideas and course of nature, 44; relations of ideas one of two possible objects of enquiry, 20; such relations discoverable by the mere operation of thought, 20, 131; no demonstration possible except in case of ideas of quantity or number, 131. Imagination 11, 39; and belief, 40. Impressions all our more lively perceptions, 12; the test of ideas, 17, 49. Incest peculiar turpitude of explained, 12. Inconceivability of the negative, 132 (cf. 20). Inertia 57 n. Inference and similarity, 30, 115 (v. _Cause_). Infinite divisibility, 124 f.