CHAPTER XX.

OF WRONG ASSENT, OR ERROR.

1. Causes of Error, or how men come to give assent contrary to

probability.

KNOWLEDGE being to be had only of visible and certain truth, ERROR is

not a fault of our knowledge, but a mistake of our judgment giving

assent to that which is not true.

But if assent be grounded on likelihood, if the proper object and motive

of our assent be probability, and that probability consists in what is

laid down in the foregoing chapters, it will be demanded HOW MEN COME TO

GIVE THEIR ASSENTS CONTRARY TO PROBABILITY. For there is nothing more

common than contrariety of opinions; nothing more obvious than that

one man wholly disbelieves what another only doubts of, and a third

steadfastly believes and firmly adheres to.

The reasons whereof, though they may be very various, yet, I suppose may

all be reduced to these four:

I. WANT OF PROOFS.

II. WANT OF ABILITY TO USE THEM.

III. WANT OF WILL TO SEE THEM.

IV. WRONG MEASURES OF PROBABILITY.

2. First cause of Error, Want of Proofs.

FIRST, By WANT OF PROOFS, I do not mean only the want of those proofs

which are nowhere extant, and so are nowhere to be had; but the want

even of those proofs which are in being, or might be procured. And thus

men want proofs, who have not the convenience or opportunity to make

experiments and observations themselves, tending to the proof of any

proposition; nor likewise the convenience to inquire into and collect

the testimonies of others: and in this state are the greatest part of

mankind, who are given up to labour, and enslaved to the necessity of

their mean condition, whose lives are worn out only in the provisions

for living. These men's opportunities of knowledge and inquiry are

commonly as narrow as their fortunes; and their understandings are but

little instructed, when all their whole time and pains is laid out to

still the croaking of their own bellies, or the cries of their children.

It is not to be expected that a man who drudges on all his life in a

laborious trade, should be more knowing in the variety of things done

in the world than a packhorse, who is driven constantly forwards and

backwards in a narrow lane and dirty road, only to market, should be

skilled in the geography of the country. Nor is it at all more possible,

that he who wants leisure, books, and languages, and the opportunity

of conversing with variety of men, should be in a condition to collect

those testimonies and observations which are in being, and are necessary

to make out many, nay most, of the propositions that, in the societies

of men, are judged of the greatest moment; or to find out grounds of

assurance so great as the belief of the points he would build on them is

thought necessary. So that a great part of mankind are, by the natural

and unalterable state of things in this world, and the constitution of

human affairs, unavoidably given over to invincible ignorance of those

proofs on which others build, and which are necessary to establish those

opinions: the greatest part of men, having much to do to get the means

of living, are not in a condition to look after those of learned and

laborious inquiries.

3. Objection, What shall become of those who want Proofs? Answered.

What shall we say, then? Are the greatest part of mankind, by the

necessity of their condition, subjected to unavoidable ignorance, in

those things which are of greatest importance to them? (for of those

it is obvious to inquire.) Have the bulk of mankind no other guide but

accident and blind chance to conduct them to their happiness or

misery? Are the current opinions, and licensed guides of every country

sufficient evidence and security to every man to venture his great

concernments on; nay, his everlasting happiness or misery? Or can those

be the certain and infallible oracles and standards of truth, which

teach one thing in Christendom and another in Turkey? Or shall a poor

countryman be eternally happy, for having the chance to be born in

Italy; or a day-labourer be unavoidably lost, because he had the

ill-luck to be born in England? How ready some men may be to say some of

these things, I will not here examine: but this I am sure, that men must

allow one or other of these to be true, (let them choose which they

please,) or else grant that God has furnished men with faculties

sufficient to direct them in the way they should take, if they will but

seriously employ them that way, when their ordinary vocations allow them

the leisure. No man is so wholly taken up with the attendance on the

means of living, as to have no spare time at all to think of his soul,

and inform himself in matters of religion. Were men as intent upon this

as they are on things of lower concernment, there are none so enslaved

to the necessities of life who might not find many vacancies that might

be husbanded to this advantage of their knowledge.

4. People hindered from Inquiry.

Besides those whose improvements and informations are straitened by

the narrowness of their fortunes, there are others whose largeness of

fortune would plentifully enough supply books, and other requisites for

clearing of doubts, and discovering of truth: but they are cooped in

close, by the laws of their countries, and the strict guards of those

whose interest it is to keep them ignorant, lest, knowing more, they

should believe the less in them. These are as far, nay further, from

the liberty and opportunities of a fair inquiry, than these poor and

wretched labourers we before spoke of: and however they may seem high

and great, are confined to narrowness of thought, and enslaved in that

which should be the freest part of man, their understandings. This is

generally the case of all those who live in places where care is taken

to propagate truth without knowledge; where men are forced, at a

venture, to be of the religion of the country; and must therefore

swallow down opinions, as silly people do empiric's pills, without

knowing what they are made of, or how they will work, and having nothing

to do but believe that they will do the cure: but in this are much

more miserable than they, in that they are not at liberty to refuse

swallowing what perhaps they had rather let alone; or to choose the

physician, to whose conduct they would trust themselves.

5. Second Cause of Error, Want of skill to use Proofs.

SECONDLY, Those who WANT SKILL TO USE THOSE EVIDENCES THEY HAVE OF

PROBABILITIES; who cannot carry a train of consequences in their heads;

nor weigh exactly the preponderancy of contrary proofs and testimonies,

making every circumstance its due allowance; may be easily misled to

assent to positions that are not probable. There are some men of one,

some but of two syllogisms, and no more; and others that can but advance

one step further. These cannot always discern that side on which the

strongest proofs lie; cannot constantly follow that which in itself is

the more probable opinion. Now that there is such a difference between

men, in respect of their understandings, I think nobody, who has had any

conversation with his neighbours, will question: though he never was at

Westminster-Hall or the Exchange on the one hand, nor at Alms-houses

or Bedlam on the other. Which great difference in men's intellectuals,

whether it rises from any defect in the organs of the body, particularly

adapted to thinking; or in the dulness or untractableness of those

faculties for want of use; or, as some think, in the natural differences

of men's souls themselves; or some, or all of these together; it matters

not here to examine: only this is evident, that there is a difference of

degrees in men's understandings, apprehensions, and reasonings, to so

great a latitude, that one may, without doing injury to mankind, affirm,

that there is a greater distance between some men and others in this

respect, than between some men and some beasts. But how this comes about

is a speculation, though of great consequence, yet not necessary to our

present purpose.

6. Third cause of Error, Want of Will to use them.

THIRDLY, There are another sort of people that want proofs, not because

they are out of their reach, but BECAUSE THEY WILL NOT USE THEM: who,

though they have riches and leisure enough, and want neither parts nor

learning, may yet, through their hot pursuit of pleasure, or business,

or else out of laziness or fear that the doctrines whose truth they

would inquire into would not suit well with their opinions, lives or

designs, may never come to the knowledge of, nor give their assent to,

those possibilities which lie so much within their view, that, to be

convinced of them, they need but turn their eyes that way. We know some

men will not read a letter which is supposed to bring ill news; and many

men forbear to cast up their accounts, or so much as think upon their

estates, who have reason to fear their affairs are in no very good

posture. How men, whose plentiful fortunes allow them leisure to improve

their understandings, can satisfy themselves with a lazy ignorance, I

cannot tell: but methinks they have a low opinion of their souls, who

lay out all their incomes in provisions for the body, and employ none of

it to procure the means and helps of knowledge; who take great care to

appear always in a neat and splendid outside, and would think themselves

miserable in coarse clothes, or a patched coat, and yet contentedly

suffer their minds to appear abroad in a piebald livery of coarse

patches and borrowed shreds, such as it has pleased chance, or their

country tailor (I mean the common opinion of those they have conversed

with) to clothe them in. I will not here mention how unreasonable this

is for men that ever think of a future state, and their concernment in

it, which no rational man can avoid to do sometimes: nor shall I take

notice what a shame and confusion it is to the greatest contemners of

knowledge, to be found ignorant in things they are concerned to

know. But this at least is worth the consideration of those who call

themselves gentlemen, That, however they may think credit, respect,

power, and authority the concomitants of their birth and fortune, yet

they will find all these still carried away from them by men of lower

condition, who surpass them in knowledge. They who are blind will

always be led by those that see, or else fall into the ditch: and he

is certainly the most subjected, the most enslaved, who is so in his

understanding. In the foregoing instances some of the causes have been

shown of wrong assent, and how it comes to pass, that probable doctrines

are not always received with an assent proportionable to the reasons

which are to be had for their probability: but hitherto we have

considered only such probabilities whose proofs do exist, but do not

appear to him who embraces the error.

7. Fourth cause of Error, Wrong Measures of Probability: which are--

FOURTHLY, There remains yet the last sort, who, even where the real

probabilities appear, and are plainly laid before them, do not admit

of the conviction, nor yield unto manifest reasons, but do either

suspend their assent, or give it to the less probable opinion. And

to this danger are those exposed who have taken up WRONG MEASURES OF

PROBABILITY, which are:

I. PROPOSITIONS THAT ARE IN THEMSELVES CERTAIN AND EVIDENT, BUT DOUBTFUL

AND FALSE, TAKEN UP FOR PRINCIPLES.

II. RECEIVED HYPOTHESES.

III. PREDOMINANT PASSIONS OR INCLINATIONS.

IV. AUTHORITY.

8. I. Doubtful Propositions taken for Principles.

The first and firmest ground of probability is the conformity anything

has to our own knowledge; especially that part of our knowledge which

we have embraced, and continue to look on as PRINCIPLES. These have so

great an influence upon our opinions, that it is usually by them we

judge of truth, and measure probability; to that degree, that what is

inconsistent with our principles, is so far from passing for probable

with us, that it will not be allowed possible. The reverence borne to

these principles is so great, and their authority so paramount to all

other, that the testimony, not only of other men, but the evidence of

our own senses are often rejected, when they offer to vouch anything

contrary to these established rules. How much the doctrine of INNATE

PRINCIPLES, and that principles are not to be proved or questioned, has

contributed to this, I will not here examine. This I readily grant, that

one truth cannot contradict another: but withal I take leave also to

say, that every one ought very carefully to beware what he admits for a

principle, to examine it strictly, and see whether he certainly knows it

to be true of itself, by its own evidence, or whether he does only with

assurance believe it to be so, upon the authority of others. For he

hath a strong bias put into his understanding, which will unavoidably

misguide his assent, who hath imbibed WRONG PRINCIPLES, and has blindly

given himself up to the authority of any opinion in itself not evidently

true.

9. Instilled in childhood.

There is nothing more ordinary than children's receiving into their

minds propositions (especially about matters of religion) from their

parents, nurses, or those about them: which being insinuated into their

unwary as well as unbiassed understandings, and fastened by degrees, are

at last (equally whether true or false) riveted there by long custom and

education, beyond all possibility of being pulled out again. For men,

when they are grown up, reflecting upon their opinions, and finding

those of this sort to be as ancient in their minds as their very

memories, not having observed their early insinuation, nor by what means

they got them, they are apt to reverence them as sacred things, and not

to suffer them to be profaned, touched, or questioned: they look on

them as the Urim and Thummim set up in their minds immediately by God

himself, to be the great and unerring deciders of truth and falsehood,

and the judges to which they are to appeal in all manner of

controversies.

10. Of irresistible efficacy.

This opinion of his principles (let them be what they will) being once

established in any one's mind, it is easy to be imagined what reception

any proposition shall find, how clearly soever proved, that shall

invalidate their authority, or at all thwart with these internal

oracles; whereas the grossest absurdities and improbabilities, being but

agreeable to such principles, go down glibly, and are easily digested.

The great obstinacy that is to be found in men firmly believing quite

contrary opinions, though many times equally absurd, in the various

religions of mankind, are as evident a proof as they are an unavoidable

consequence of this way of reasoning from received traditional

principles. So that men will disbelieve their own eyes, renounce the

evidence of their senses, and give their own experience the lie, rather

than admit of anything disagreeing with these sacred tenets. Take an

intelligent Romanist that, from the first dawning of any notions in his

understanding, hath had this principle constantly inculcated, viz. that

he must believe as the church (i.e. those of his communion) believes,

or that the pope is infallible, and this he never so much as heard

questioned, till at forty or fifty years old he met with one of other

principles: how is he prepared easily to swallow, not only against all

probability, but even the clear evidence of his senses, the doctrine of

TRANSUBSTANTIATION? This principle has such an influence on his mind,

that he will believe that to be flesh which he sees to be bread. And

what way will you take to convince a man of any improbable opinion he

holds, who, with some philosophers, hath laid down this as a foundation

of reasoning, That he must believe his reason (for so men improperly

call arguments drawn from their principles) against his senses? Let an

enthusiast be principled that he or his teacher is inspired, and acted

by an immediate communication of the Divine Spirit, and you in vain

bring the evidence of clear reasons against his doctrine. Whoever,

therefore, have imbibed wrong principles, are not, in things

inconsistent with these principles, to be moved by the most apparent

and convincing probabilities, till they are so candid and ingenuous to

themselves, as to be persuaded to examine even those very principles,

which many never suffer themselves to do.

11. Received Hypotheses.

Next to these are men whose understandings are cast into a mould, and

fashioned just to the size of a received HYPOTHESIS. The difference

between these and the former, is, that they will admit of matter of

fact, and agree with dissenters in that; but differ only in assigning of

reasons and explaining the manner of operation. These are not at that

open defiance with their senses, with the former: they can endure to

hearken to their information a little more patiently; but will by no

means admit of their reports in the explanation of things; nor be

prevailed on by probabilities, which would convince them that things

are not brought about just after the same manner that they have decreed

within themselves that they are. Would it not be an insufferable thing

for a learned professor, and that which his scarlet would blush at, to

have his authority of forty years standing, wrought out of hard rock,

Greek and Latin, with no small expense of time and candle, and confirmed

by general tradition and a reverend beard, in an instant overturned

by an upstart novelist? Can any one expect that he should be made to

confess, that what he taught his scholars thirty years ago was all error

and mistake; and that he sold them hard words and ignorance at a very

dear rate. What probabilities, I say, are sufficient to prevail in such

a case? And who ever, by the most cogent arguments, will be prevailed

with to disrobe himself at once of all his old opinions, and pretences

to knowledge and learning, which with hard study he hath all this time

been labouring for; and turn himself out stark naked, in quest afresh of

new notions? All the arguments that can be used will be as little able

to prevail, as the wind did with the traveller to part with his cloak,

which he held only the faster. To this of wrong hypothesis may be

reduced the errors that may be occasioned by a true hypothesis, or right

principles, but not rightly understood. There is nothing more familiar

than this. The instances of men contending for different opinions, which

they all derive from the infallible truth of the Scripture, are an

undeniable proof of it. All that call themselves Christians, allow the

text that says,[word in Greek], to carry in it the obligation to a very

weighty duty. But yet how very erroneous will one of their practices

be, who, understanding nothing but the French, take this rule with one

translation to be, REPENTEZ-VOUS, repent; or with the other, FATIEZ

PENITENCE, do penance.

12. III. Predominant Passions.

Probabilities which cross men's appetites and prevailing passions run

the same fate. Let ever so much probability hang on one side of a

covetous man's reasoning, and money on the other; it is easy to foresee

which will outweigh. Earthly minds, like mud walls, resist the strongest

batteries: and though, perhaps, sometimes the force of a clear argument

may make some impression, yet they nevertheless stand firm, and keep

out the enemy, truth, that would captivate or disturb them. Tell a man

passionately in love, that he is jilted; bring a score of witnesses of

the falsehood of his mistress, it is ten to one but three kind words

of hers shall invalidate all their testimonies. QUOD VOLUMUS, FACILE

CREDIMUS; what suits our wishes, is forwardly believed, is, I suppose,

what every one hath more than once experimented: and though men cannot

always openly gainsay or resist the force of manifest probabilities that

make against them, yet yield they not to the argument. Not but that it

is the nature of the understanding constantly to close with the more

probable side; but yet a man hath a power to suspend and restrain its

inquiries, and not permit a full and satisfactory examination, as far as

the matter in question is capable, and will bear it to be made. Until

that be done, there will be always these two ways left of evading the

most apparent probabilities:

13. Two Means of evading Probabilities: 1. Supposed Fallacy latent in

the words employed.

First, That the arguments being (as for the most part they are) brought

in words, THERE MAY BE A FALLACY LATENT IN THEM: and the consequences

being, perhaps, many in train, they may be some of them incoherent.

There are very few discourses so short, clear, and consistent, to which

most men may not, with satisfaction enough to themselves, raise this

doubt; and from whose conviction they may not, without reproach of

disingenuity or unreasonableness, set themselves free with the old

reply, Non persuadebis, etiamsi persuaseris; though I cannot answer, I

will not yield.

14. Supposed unknown Arguments for the contrary.

Secondly, Manifest probabilities maybe evaded, and the assent withheld,

upon this suggestion, That I know not yet all that may be said on the

contrary side. And therefore, though I be beaten, it is not necessary I

should yield, not knowing what forces there are in reserve behind. This

is a refuge against conviction so open and so wide, that it is hard to

determine when a man is quite out of the verge of it.

15. What Probabilities naturally determine the Assent.

But yet there is some end of it; and a man having carefully inquired

into all the grounds of probability and unlikeliness; done his utmost to

inform himself in all particulars fairly, and cast up the sum total on

both sides; may, in most cases, come to acknowledge, upon the whole

matter, on which side the probability rests: wherein some proofs in

matter of reason, being suppositions upon universal experience, are so

cogent and clear, and some testimonies in matter of fact so universal,

that he cannot refuse his assent. So that I think we may conclude, that,

in propositions, where though the proofs in view are of most moment, yet

there are sufficient grounds to suspect that there is either fallacy in

words, or certain proofs as considerable to be produced on the contrary

side; there assent, suspense, or dissent, are often voluntary actions.

But where the proofs are such as make it highly probable, and there is

not sufficient ground to suspect that there is either fallacy of words

(which sober and serious consideration may discover) nor equally valid

proofs yet undiscovered, latent on the other side (which also the nature

of the thing may, in some cases, make plain to a considerate man;)

there, I think, a man who has weighed them can scarce refuse his assent

to the side on which the greater probability appears. Whether it be

probable that a promiscuous jumble of printing letters should often

fall into a method and order, which should stamp on paper a coherent

discourse; or that a blind fortuitous concourse of atoms, not guided by

an understanding agent, should frequently constitute the bodies of any

species of animals: in these and the like cases, I think, nobody that

considers them can be one jot at a stand which side to take, nor at all

waver in his assent. Lastly, when there can be no supposition (the thing

in its own nature indifferent, and wholly depending upon the testimony

of witnesses) that there is as fair testimony against, as for the matter

of fact attested; which by inquiry is to be learned, v.g. whether there

was one thousand seven hundred years ago such a man at Rome as Julius

Caesar: in all such cases, I say, I think it is not in any rational

man's power to refuse his assent; but that it necessarily follows, and

closes with such probabilities. In other less clear cases, I think it is

in man's power to suspend his assent; and perhaps content himself with

the proofs he has, if they favour the opinion that suits with his

inclination or interest, and so stop from further search. But that a

man should afford his assent to that side on which the less probability

appears to him, seems to me utterly impracticable, and as impossible

as it is to believe the same thing probable and improbable at the same

time.

16. Where it is in our Power to suspend our Judgment.

As knowledge is no more arbitrary than perception; so, I think, assent

is no more in our power than knowledge. When the agreement of any two

ideas appears to our minds, whether immediately or by the assistance of

reason, I can no more refuse to perceive, no more avoid knowing it, than

I can avoid seeing those objects which I turn my eyes to, and look on

in daylight; and what upon full examination I find the most probable, I

cannot deny my assent to. But, though we cannot hinder our knowledge,

where the agreement is once perceived; nor our assent, where the

probability manifestly appears upon due consideration of all the

measures of it: yet we can hinder both KNOWLEDGE and ASSENT, BY STOPPING

OUR INQUIRY, and not employing our faculties in the search of any truth.

If it were not so, ignorance, error, or infidelity, could not in any

case be a fault. Thus, in some cases we can prevent or suspend our

assent: but can a man versed in modern or ancient history doubt whether

there is such a place as Rome, or whether there was such a man as Julius

Caesar? Indeed, there are millions of truths that a man is not, or may

not think himself concerned to know; as whether our king Richard the

Third was crooked or no; or whether Roger Bacon was a mathematician or

a magician. In these and such like cases, where the assent one way or

other is of no importance to the interest of any one; no action, no

concernment of his following or depending thereon, there it is not

strange that the mind should give itself up to the common opinion, or

render itself to the first comer. These and the like opinions are of so

little weight and moment, that, like motes in the sun, their tendencies

are very rarely taken notice of. They are there, as it were, by chance,

and the mind lets them float at liberty. But where the mind judges that

the proposition has concernment in it: where the assent or not assenting

is thought to draw consequences of moment after it, and good and evil to

depend on choosing or refusing the right side, and the mind sets itself

seriously to inquire and examine the probability: there I think it is

not in our choice to take which side we please, if manifest odds appear

on either. The greater probability, I think, in that case will determine

the assent: and a man can no more avoid assenting, or taking it to be

true, where he perceives the greater probability, than he can avoid

knowing it to be true, where he perceives the agreement or disagreement

of any two ideas.

If this be so, the foundation of error will lie in wrong measures of

probability; as the foundation of vice in wrong measures of good.

17. IV. Authority

The fourth and last wrong measure of probability I shall take notice of,

and which keeps in ignorance or error more people than all the other

together, is that which I have mentioned in the foregoing chapter: I

mean the giving up our assent to the common received opinions, either

of our friends or party, neighbourhood or country. How many men have no

other ground for their tenets, than the supposed honesty, or learning,

or number of those of the same profession? As if honest or bookish

men could not err; or truth were to be established by the vote of the

multitude: yet this with most men serves the turn. The tenet has had the

attestation of reverend antiquity; it comes to me with the passport of

former ages, and therefore I am secure in the reception I give it: other

men have been and are of the same opinion, (for that is all is said,)

and therefore it is reasonable for me to embrace it. A man may more

justifiably throw up cross and pile for his opinions, than take them up

by such measures. All men are liable to error, and most men are in many

points, by passion or interest, under temptation to it. If we could but

see the secret motives that influenced the men of name and learning in

the world, and the leaders of parties, we should not always find that it

was the embracing of truth for its own sake, that made them espouse the

doctrines they owned and maintained. This at least is certain, there is

not an opinion so absurd, which a man may not receive upon this ground.

There is no error to be named, which has not had its professors: and a

man shall never want crooked paths to walk in, if he thinks that he is

in the right way, wherever he has the footsteps of others to follow. 18.

Not so many men in Errors as is commonly supposed.

But, notwithstanding the great noise is made in the world about errors

and opinions, I must do mankind that right as to say, THERE ARE NOT SO

MANY MEN IN ERRORS AND WRONG OPINIONS AS IS COMMONLY SUPPOSED. Not that

I think they embrace the truth; but indeed, because concerning those

doctrines they keep such a stir about, they have no thought, no opinion

at all. For if any one should a little catechise the greatest part of

the partizans of most of the sects in the world, he would not find,

concerning those matters they are so zealous for, that they have any

opinions of their own: much less would he have reason to think that

they took them upon the examination of arguments and appearance of

probability. They are resolved to stick to a party that education or

interest has engaged them in; and there, like the common soldiers of an

army, show their courage and warmth as their leaders direct, without

ever examining, or so much as knowing, the cause they contend for. If a

man's life shows that he has no serious regard for religion; for what

reason should we think that he beats his head about the opinions of his

church, and troubles himself to examine the grounds of this or that

doctrine? It is enough for him to obey his leaders, to have his hand

and his tongue ready for the support of the common cause, and thereby

approve himself to those who can give him credit, preferment, or

protection in that society. Thus men become professors of, and

combatants for, those opinions they were never convinced of nor

proselytes to; no, nor ever had so much as floating in their heads: and

though one cannot say there are fewer improbable or erroneous opinions

in the world than there are, yet this is certain; there are fewer that

actually assent to them, and mistake them for truths, than is imagined.

An Essay Concerning Humane Understanding, Volume 2 MDCXC, Based on the 2nd Edition, Books 3 and 4 · 第 20 / 21 章