PART III

.

129. There is, indeed, a more _mitigated_ scepticism or _academical_ philosophy, which may be both durable and useful, and which may, in part, be the result of this Pyrrhonism, or _excessive_ scepticism, when its undistinguished doubts are, in some measure, corrected by common sense and reflection. The greater part of mankind are naturally apt to be affirmative and dogmatical in their opinions; and while they see objects only on one side, and have no idea of any counterpoising argument, they throw themselves precipitately into the principles, to which they are inclined; nor have they any indulgence for those who entertain opposite sentiments. To hesitate or balance perplexes their understanding, checks their passion, and suspends their action. They are, therefore, impatient till they escape from a state, which to them is so uneasy: and they think, that they could never remove themselves far enough from it, by the violence of their affirmations and obstinacy of their belief. But could such dogmatical reasoners become sensible of the strange infirmities of human understanding, even in its most perfect state, and when most accurate and cautious in its determinations; such a reflection would naturally inspire them with more modesty and reserve, and diminish their fond opinion of themselves, and their prejudice against antagonists. The illiterate may reflect on the disposition of the learned, who, amidst all the advantages of study and reflection, are commonly still diffident in their determinations: and if any of the learned be inclined, from their natural temper, to haughtiness and obstinacy, a small tincture of Pyrrhonism might abate their pride, by showing them, that the few advantages, which they may have attained over their fellows, are but inconsiderable, if compared with the universal perplexity and confusion, which is inherent in human nature. In general, there is a degree of doubt, and caution, and modesty, which, in all kinds of scrutiny and decision, ought for ever to accompany a just reasoner.

130. Another species of _mitigated_ scepticism which may be of advantage to mankind, and which may be the natural result of the Pyrrhonian doubts and scruples, is the limitation of our enquiries to such subjects as are best adapted to the narrow capacity of human understanding. The _imagination_ of man is naturally sublime, delighted with whatever is remote and extraordinary, and running, without control, into the most distant parts of space and time in order to avoid the objects, which custom has rendered too familiar to it. A correct _Judgement_ observes a contrary method, and avoiding all distant and high enquiries, confines itself to common life, and to such subjects as fall under daily practice and experience; leaving the more sublime topics to the embellishment of poets and orators, or to the arts of priests and politicians. To bring us to so salutary a determination, nothing can be more serviceable, than to be once thoroughly convinced of the force of the Pyrrhonian doubt, and of the impossibility, that anything, but the strong power of natural instinct, could free us from it. Those who have a propensity to philosophy, will still continue their researches; because they reflect, that, besides the immediate pleasure, attending such an occupation, philosophical decisions are nothing but the reflections of common life, methodized and corrected. But they will never be tempted to go beyond common life, so long as they consider the imperfection of those faculties which they employ, their narrow reach, and their inaccurate operations. While we cannot give a satisfactory reason, why we believe, after a thousand experiments, that a stone will fall, or fire burn; can we ever satisfy ourselves concerning any determination, which we may form, with regard to the origin of worlds, and the situation of nature, from, and to eternity?

This narrow limitation, indeed, of our enquiries, is, in every respect, so reasonable, that it suffices to make the slightest examination into the natural powers of the human mind and to compare them with their objects, in order to recommend it to us. We shall then find what are the proper subjects of science and enquiry.

131. It seems to me, that the only objects of the abstract science or of demonstration are quantity and number, and that all attempts to extend this more perfect species of knowledge beyond these bounds are mere sophistry and illusion. As the component parts of quantity and number are entirely similar, their relations become intricate and involved; and nothing can be more curious, as well as useful, than to trace, by a variety of mediums, their equality or inequality, through their different appearances. But as all other ideas are clearly distinct and different from each other, we can never advance farther, by our utmost scrutiny, than to observe this diversity, and, by an obvious reflection, pronounce one thing not to be another. Or if there be any difficulty in these decisions, it proceeds entirely from the undeterminate meaning of words, which is corrected by juster definitions. That _the square of the hypothenuse is equal to the squares of the other two sides_, cannot be known, let the terms be ever so exactly defined, without a train of reasoning and enquiry. But to convince us of this proposition, _that where there is no property, there can be no injustice_, it is only necessary to define the terms, and explain injustice to be a violation of property. This proposition is, indeed, nothing but a more imperfect definition. It is the same case with all those pretended syllogistical reasonings, which may be found in every other branch of learning, except the sciences of quantity and number; and these may safely, I think, be pronounced the only proper objects of knowledge and demonstration.

132. All other enquiries of men regard only matter of fact and existence; and these are evidently incapable of demonstration. Whatever _is_ may _not be_. No negation of a fact can involve a contradiction. The non-existence of any being, without exception, is as clear and distinct an idea as its existence. The proposition, which affirms it not to be, however false, is no less conceivable and intelligible, than that which affirms it to be. The case is different with the sciences, properly so called. Every proposition, which is not true, is there confused and unintelligible. That the cube root of 64 is equal to the half of 10, is a false proposition, and can never be distinctly conceived. But that Caesar, or the angel Gabriel, or any being never existed, may be a false proposition, but still is perfectly conceivable, and implies no contradiction.

The existence, therefore, of any being can only be proved by arguments from its cause or its effect; and these arguments are founded entirely on experience. If we reason _a priori_, anything may appear able to produce anything. The falling of a pebble may, for aught we know, extinguish the sun; or the wish of a man control the planets in their orbits. It is only experience, which teaches us the nature and bounds of cause and effect, and enables us to infer the existence of one object from that of another[34]. Such is the foundation of moral reasoning, which forms the greater part of human knowledge, and is the source of all human action and behaviour.

[34] That impious maxim of the ancient philosophy, _Ex nihilo, nihil fit_, by which the creation of matter was excluded, ceases to be a maxim, according to this philosophy. Not only the will of the supreme Being may create matter; but, for aught we know _a priori_, the will of any other being might create it, or any other cause, that the most whimsical imagination can assign.

Moral reasonings are either concerning particular or general facts. All deliberations in life regard the former; as also all disquisitions in history, chronology, geography, and astronomy.

The sciences, which treat of general facts, are politics, natural philosophy, physic, chemistry, &c. where the qualities, causes and effects of a whole species of objects are enquired into.

Divinity or Theology, as it proves the existence of a Deity, and the immortality of souls, is composed partly of reasonings concerning

## particular, partly concerning general facts. It has a foundation in

_reason_, so far as it is supported by experience. But its best and most solid foundation is _faith_ and divine revelation.

Morals and criticism are not so properly objects of the understanding as of taste and sentiment. Beauty, whether moral or natural, is felt, more properly than perceived. Or if we reason concerning it, and endeavour to fix its standard, we regard a new fact, to wit, the general tastes of mankind, or some such fact, which may be the object of reasoning and enquiry.

When we run over libraries, persuaded of these principles, what havoc must we make? If we take in our hand any volume; of divinity or school metaphysics, for instance; let us ask, _Does it contain any abstract reasoning concerning quantity or number?_ No. _Does it contain any experimental reasoning concerning matter of fact and existence?_ No. Commit it then to the flames: for it can contain nothing but sophistry and illusion.

INDEX

Abstraction not source of ideas of primary qualities, 122.

Academic philosophy, 34.

## Action

and philosophy, 1, 4, 34, 128;

Addition 4.

Analogy a species of, the foundation of all reasoning about matter of fact, 82;

Animals the reason of, 83-85; learn from experience and draw inferences, 83; which can only be founded on custom, 84; cause of difference between men and animals, 84 n.

Antiquity 62.

Appearances to senses must be corrected by reason, 117.

A priori 25, 36 n, 89 n, 132, 132 n.

Aristotle 4.

Association of ideas, three principles of, 18-19, 41-44 (v. _Cause_ C).

Atheism 116.

Bacon 99.

Belief (v. _Cause_ C, 39-45); and chance, 46.

Berkeley really a sceptic, 122 n.

Bigotry 102.

Body and soul, mystery of union of, 52; volition and movements of, 52.

Real existence of (v. _Scepticism_, B, 118-123).

Cause first (v. _God_, _Necessity_, 78-81; _Providence_, 102-115, 132 n). a principle of association of ideas, 19, 43; sole foundation of reasonings about matter of fact or real existence, 22.

A. _Knowledge of Causes arises from experience not from Reason_, 23-33.

Reasonings _a priori_ give no knowledge of cause and effect, 23 f.; impossible to see the effect in the cause since they are totally different, 25; natural philosophy never pretends to assign ultimate causes, but only to reduce causes to a few general causes, e.g. gravity, 26; geometry applies laws obtained by experience, 27.

Conclusions from experience not based on any process of the understanding, 28; yet we infer in the future a similar connexion between known qualities of things and their secret powers, to that which we assumed in the past. On what is this inference based? 29; demonstrative reasoning has no place here, and all experimental reasoning assumes the resemblance of the future to the past, and so cannot prove it without being circular, 30, 32; if reasoning were the basis of this belief, there would be no need for the multiplication of instances or of long experience, 31; yet conclusions about matter of fact are affected by experience even in beasts and children, so that they cannot be founded on abstruse reasoning, 33; to explain our inferences from experience a principle is required of equal weight and authority with reason, 34.

B. _Custom enables us to infer existence of one object from the appearance of another_, 35-38.

Experience enables us to ascribe a more than arbitrary connexion to objects, 35; we are determined to this by custom or habit which is the great guide of human life, 36; but our inference must be based on some fact present to the senses or memory, 37; the customary conjunction between such an object and some other object produces an operation of the soul which is as unavoidable as love, 38; animals also infer one event from another by custom, 82-84; and in man as in animals experimental reasoning depends on a species of instinct or mechanical power that acts in us unknown to ourselves, 85.

C. _Belief_, 39-45. Belief differs from fiction or the loose reveries of the fancy by some feeling annexed to it, 39; belief cannot be defined, but may be described as a more lively, forcible, firm, steady conception of an object than can be attained by the imagination alone, 40; it is produced by the principles of association, viz. resemblance, 41; contiguity, 42; causation, 43; by a kind of pre-established harmony between the course of nature and our ideas, 44; this operation of our minds necessary to our subsistence and so entrusted by nature to instinct rather than to reasoning, 45.

_Probability_, 46-7.

Belief produced by a majority of chances by an inexplicable contrivance of Nature, 46 (cf. 87-8); probability of causes: the failure of a cause ascribed to a secret counteracting cause, 47 (cf. 67); it is universally allowed that chance when strictly examined is a mere negative word, 74.

D. _Power_, 49-57.

Power, force, energy, necessary connexion must either be defined by analysis or explained by production of the impression from which they are copied, 49; from the first appearance of an object we cannot foretell its effect: we cannot see the power of a single body: we only see sequence, 50.

Is the idea of power derived from an internal impression and is it an idea of reflection? 51; it is not derived, as Locke said, from reasoning about power of production in nature, 50 n; nor from consciousness of influence of will over bodily organs, 52; nor from effort to overcome resistance, 52 n (cf. 60 n); nor from influence of will over mind, 53; many philosophers appeal to an invisible intelligent principle, to a volition of the supreme being, and regard causes as only occasions and our mental conceptions as revelations, 54-5; thus diminishing the grandeur of God, 56; this theory too bold and beyond verification by our faculties, and is no explanation, 57; vis inertiae, 57 n.

In single instances we only see sequence of loose events which are conjoined and never connected, 58; the idea of necessary connexion only arises from a number of similar instances, and the only difference between such a number and a single instance is that the former produces a habit of expecting the usual attendant, 59, 61. This customary transition is the impression from which we form the idea of necessary connexion.

E. _Reasoning from effect to cause and conversely_, 105-115 (v. _Providence_).

In arguing from effect to cause we must not infer more qualities in the cause than are required to produce the effect, nor reason backwards from an inferred cause to new effects, 105-8; we can reason back from cause to new effects in the case of human acts by analogy which rests on previous knowledge, 111-2; when the effect is entirely singular and does not belong to any species we cannot infer its cause at all, 115.

F. _Definitions of Cause_, 60 (cf. 74 n).

Ceremonies 41.

Chance ignorance of causes, 46; has no existence, 74 (v. _Cause_ B).

Cicero 4.

Circle in reasoning, 30.

Clarke 37 n.

Colour peculiarity of ideas of, 16.

Contiguity 19, 42.

Contradiction the test of demonstration, 132.

Contrariety 19 n.

Contrary of matter of fact always possible, 21, 132.

Creation 132 n.

Criticism 132.

Cudworth 57 n, 158 n.

Custom when strongest conceals itself, 24; an ultimate principle of all conclusions from experience, 36, 127; and belief, 39-45; gives rise to inferences of animals, 84.

Definition only applicable to complex ideas, 49; need of, 131; of cause, 60.

Demonstrative opp. intuitive, 20; reasoning, 30; confined to quantity and number, 131; impossible to demonstrate a fact since no negation of a fact can involve a contradiction, 132.

Descartes 57 n.; his universal doubt antecedent to study if strictly taken is incurable, since even from an indubitable first principle no advance can be made except by the faculties which we doubt, 116; his appeal to the veracity of God is useless, 120 (v. _Scepticism_, 116-132).

Design argument from, 105 f. (v. _Providence_).

Divisibility of mathematical and physical points, 124.

Doubt Cartesian, 116, 120 (v. _Scepticism_ A).

Epictetus 34.

Epicurean philosophy, defence of, 102-15; denial of providence and future state is harmless, 104 (v. _Providence_).

Euclid truths in, do not depend on existence of circles or triangles, 20.

Evidence moral and natural, 70; value of human, 82-9 (v. _Miracles_).

Evil doctrine of necessity either makes God the cause of evil or denies existence of evil as regards the whole, 78-81.

Existence external and perception, 118-9 (v. _Scepticism_, B, 116-32).

Ex nihilo nihil 132 n.

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.

Instances multiplication of not required by reason, 31.

Instinct more trustworthy than reasoning, 45; the basis of all experimental reasoning, 85; the basis of realism, 118, 121.

Intuitive opp. mediate reasoning, 2.

La Bruyere 4.

Liberty (v. _Necessity_, 62-97). Definition of hypothetical liberty, 73. Necessary to morality, 77.

Locke 4, 40 n, 50 n, 57 n. His loose use of 'ideas,' 19 n; betrayed into frivolous disputes about innate ideas by the School-men, 19 n; distinction of primary and secondary qualities, 122.

Malebranche 4, 57 n..

Man a reasonable and active being, 4.

Marriage rules of, based on and vary with utility, 118.

Mathematics ideas of, clear and determinate, hence their superiority to moral and metaphysical sciences, 48; their difficulty, 48.

Mathematical and physical points, 124 n.

Matter necessity of, 64; creation of, 132 n (v. _Scepticism_ A).

Matter-of-fact contrary of, always possible, 21; arguments to new, based only on cause and effect, 22.

Metaphysics not a science, 5-6; how inferior and superior to mathematics, 48.

Mind mental geography, 8; secret springs and principles of, 9; can only mix and compound materials given by inward and outward sentiment, 13; power of will over, 53.

Miracles. 86-101.

Belief in human evidence diminishes according as the event witnessed is unusual or extraordinary, 89; difference between extraordinary and miraculous, 89 n; if the evidence for a miracle amounted to proof we should have one proof opposed by another proof, for the proof against a miracle is as complete as possible; an event is not miraculous unless there is a uniform experience, that is a proof, against it, 90; definition of miracle, 90 n; hence no testimony is sufficient to establish a miracle unless its falsehood would be more miraculous than the event it establishes, 91; as a fact the evidence for a miracle has never amounted to proof, 92; the passion for the wonderful in human nature, 93; prevalence of miracles in savage and early periods and their diminution with civilization, 94; the evidence for miracles in matters of religion opposed by the almost infinite number of witnesses for rival religions, 95; value of human testimony diminished by temptation to pose as a prophet or apostle, 97; no testimony for a miracle has ever amounted to a probability, much less to a proof, and if it did amount to a proof it would be opposed by another perfect proof, 98; so a miracle can never be proved so as to be the foundation of a system of religion, 99; a conclusion which confounds those who base the Christian religion on reason, not on faith, 100; the Christian religion cannot be believed without a miracle which will subvert the principle of a man's understanding and give him a determination to believe what is most contrary to custom and experience, 101.

Moral evil (q.v.) 80.

Moral science 30; inferior to mathematics, 48; sceptical objections to, 126-7.

Moral evidence easily combined with natural, 70.

Motion 50.

Nature design in, 105 f. (v. _Providence_), and the course of our ideas, 44.

State of, a philosophical fiction, 151, 151 n.

Necessary connexion (v. _Cause_).

Necessity two definitions of, 75.

A. _and Liberty_, 62-81; the controversy is based on ambiguity, and all mankind have always been of the same opinion on this subject, 63; our idea of the necessity of matter arises solely from observed uniformity and consequent inference, circumstances which are allowed by all men to exist in respect of human action, 64; history and knowledge of human nature assume such uniformity, 65, which does not exclude variety due to education and progress, 66; irregular actions to be explained by secret operation of contrary causes, 67; the inconstancy of human action, its constant character, as of winds and weather, 68; we all acknowledge and draw inferences from the regular conjunction of motives and actions, 69; history, politics, and morals show this, and the possibility of combining moral and natural evidence shows that they have a common origin, 70; the reluctance to acknowledge the necessity of actions due to a lingering belief that we can see real connexion behind mere conjunction, 71; we should begin with the examination not of the soul and will but of brute matter, 72; the prevalence of the liberty doctrine due to a false sensation of liberty and a false experiment, 72 n; though this question is the most contentious of all, mankind has always agreed in the doctrine of liberty, if we mean by it that hypothetical liberty which consists in a power of

## acting or not acting according to the determinations of our

will, and which can be ascribed to every one who is not a prisoner, 73; liberty when opposed to necessity, and not merely to constraint, is the same as chance, 74.

B. _Both necessity and liberty are necessary to morality_, this doctrine of necessity only alters our view of matter and so is at least innocent, 75; rewards and punishments imply the uniform influence of motives, and connexion of character and action: if necessity be denied, a man may commit any crime and be no worse for it, 76; liberty also essential to morality, 77.

Objection that doctrine of necessity and of a regular chain of causes either makes God the cause of evil, or abolishes evil in actions, 78; Stoic answer, that the whole system is good, is specious but ineffectual in practice, 79; no speculative argument can counteract the impulse of our natural sentiments to blame certain actions, 80; how God can be the cause of all actions without being the author of moral evil is a mystery with which philosophy cannot deal, 81.

Negative inconceivability of, 132.

Newton 57 n.

Nisus 52 n, 60 n.

Number the object of demonstration, 131.

Occasional causes theory of, 55.

Parallelism between thought and course of nature, 44-5.

Perception and external objects, 119 f. (v. _Scepticism_, _Impression_, _Idea_).

Philosophy moral, two branches of, abstruse and practical, 1-5; gratifies innocent curiosity, 6; metaphysics tries to deal with matters inaccessible to human understanding, 6.

True, must lay down limits of understanding, 7 (cf. 113); a large part of, consists in mental geography, 8; may hope to resolve principles of mind into still more general principles, 9.

Natural, only staves off our ignorance a little longer, as moral or metaphysical philosophy serves only to discover larger portions of it, 26; academical, or sceptical, flatters no bias or passion except love of truth, and so has few partisans, 34; though it destroy speculation, cannot destroy action, for nature steps in and asserts her rights, 34; moral, inferior to mathematics in clearness of ideas, superior in shortness of arguments, 48.

Controversies in, due to ambiguity of terms, 62.

Disputes in, not be settled by appeal to dangerous consequences of a doctrine, 75.

Speculative, entirely indifferent to the peace of society and security of government, 104 (cf. 114).

All the philosophy in the world, and all the religion in the world, which is nothing but a species of philosophy, can never carry us beyond the usual course of experience, 113.

Happiness of, to have originated in an age and country of freedom and toleration, 102.

Points physical, indivisible, 124 n.

Power 50 f, 60 n. (v. _Cause_ D).

Probability 46 f. (v. _Cause_, B).

Probable arguments, 38, 46 n.

Production 50 n.

Promises not the foundation of justice, 257.

Proof 46 n, 86-101 (v. _Miracles_, _Demonstrative_).

Providence 102-115 (v. _God_).

The sole argument for a divine existence is from the marks of design in nature; must not infer greater power in the cause than is necessary to produce the observed effects, nor argue from such an inferred cause to any new effects which have not been observed, 105; so must not infer in God more power, wisdom, and benevolence than appears in nature, 106; so it is unnecessary to try and save the honour of the Gods by assuming the intractability of matter or the observance of general laws, 107; to argue from effects to unknown causes, and then from these causes to unknown effects, is a gross sophism, 108.

From imperfect exercise of justice in this world we cannot infer its perfect exercise in a future world, 109; we must regulate our conduct solely by the experienced train of events, 110; in case of human works of art we can infer the perfect from the imperfect, but that is because we know man by experience and also know other instances of his art, 111-112; but in the case of God we only know him by his productions, and do not know any class of beings to which he belongs, 113; and the universe, his production, is entirely singular and does not belong to a known species of things, 115.

Punishment requires doctrines of necessity and liberty, 76 (v. _Necessity_).

Pyrrhonism 126.

Qualities primary and secondary, 122.

Quantity and number, the only objects of demonstration, the parts of them being entirely similar, 131.

Real presence, 86.

Reality and thought, 44.

Realism of the vulgar, 118.

Reason (a) opp. intuition, 29; opp. experience, 28, 36 n.

(b) Corrects sympathy and senses, 117. No match for nature, 34.

Fallacious, compared with instinct, 45.

Of men and animals, 84 n.

(c) attempts to destroy, by reasoning, 124; objections to abstract reasoning, 124 f. (v. _Scepticism_).

(d) _Reasoning_.

Two kinds of, demonstrative and moral, 30, 46 n, 132; moral, divided into general and particular, 132; produces demonstrations, proofs, and probabilities, 46 n.

Probable (v. _Cause_, 28-32).

Relations of ideas, discoverable by the mere operation of thought, independently of the existence of any object, 20.

Religion a kind of philosophy, 113 (v. _Miracles, Providence_).

Resemblance 19, 41 (v. _Similarity_).

Resistance and idea of power, 53 n.

Scepticism A. antecedent to study and philosophy, such as Descartes' universal doubt of our faculties, would be incurable: in a more moderate sense it is useful, 116 (cf. 129-30); extravagant attempts of, to destroy reason by reasoning, 124.

No such absurd creature as a man who has no opinion about anything at all, 116; admits of no answer and produces no conviction, 122 n. (cf. 34, 126, 128).

B. _As to the Senses_, 117-123.

The ordinary criticisms of our senses only show that they have to be corrected by Reason, 117; more profound arguments show that the vulgar belief in external objects is baseless, and that the objects we see are nothing but perceptions which are fleeting copies of other existences, 118; even this philosophy is hard to justify; it appeals neither to natural instinct, nor to experience, for experience tells nothing of objects which perceptions resemble, 119; the appeal to the _veracity of God_ is useless, 120; and scepticism is here triumphant, 121.

_The distinction between primary and secondary qualities_ is useless, for the supposed primary qualities are only perceptions, 122; and Berkeley's theory that ideas of primary qualities are obtained by abstraction is impossible, 122, 122 n; if matter is deprived of both primary and secondary qualities there is nothing left except a mere something which is not worth arguing about, 123.

C. _As to Reason_, 124-130.

Attempt to destroy Reason by reasoning extravagant, 124; objection to _abstract reasoning_ because it asserts infinite divisibility of extension which is shocking to common sense, 124, and infinite divisibility of time, 125; yet the ideas attacked are so clear and distinct that scepticism becomes sceptical about itself, 125.

Popular objections to _moral reasoning_ about matter of fact, based on weakness of understanding, variation of judgement, and disagreement among men, confuted by action, 126; philosophical objections, that we only experience conjunction and that inference is based on custom, 127; excessive scepticism refuted by its uselessness and put to flight by the most trivial event in life, 128.

Mitigated scepticism or academical philosophy useful as a corrective and as producing caution and modesty, 129; and as limiting understanding to proper objects, 130; all reasoning which is not either abstract, about quantity and number, or experimental, about matters of fact, is sophistry and illusion, 132.

D. In _Religion_ (v. _Miracles_, _Providence_).

Sciences 132 (v. _Reason_, (d); _Scepticism_, C).

Secret powers, 39; counteracting causes, 47, 67.

Senses outward and inward sensation supplies all the materials of thinking--must be corrected by reason, 117.

Scepticism concerning, 117 (v. _Scepticism_, B).

Similarity basis of all arguments from experience, 31 (cf. 115).

Solidity 50; a supposed primary quality, 122.

Soul and body, 52.

Space and time, 124 f.

Species an effect which belongs to no species does not admit of inference to its cause, 115 (cf. 113).

Stoics 34, 79.

Superstition 6 (v. _Providence_).

Theology science of, 132 (v. _God_, _Providence_).

Tillotson argument against real presence, 86.

Time and space, 124 f.

Truth 8, 17 (v. _Scepticism_).

Understanding limits of human, 7; operations of, to be classified, 8; opp. experience, 28; weakness of, 126 (v. _Reason_, _Scepticism_).

Voluntariness as ground of distinction between virtues and talents, 130.

Whole theory that everything is good as regards 'the whole,' 79, 80.

Will compounds materials given by senses, 13; influence of over organs of body can never give us the idea of power; for we are not conscious of any power in our will, only of sequence of motions on will, 52; so with power of will over our minds in raising up new ideas, 53.

Of God, cannot be used to explain motion, 57.

Freedom of (v. _Necessity_).