An Essay Concerning Human Understanding by John Locke - HTML preview

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Chapter XIX

Of Enthusiasm

1. Love of truth necessary. He that would seriously set upon the search of truth ought in the first

place to prepare his mind with a love of it. For he that loves it not will not take much pains to get it;

nor be much concerned when he misses it. There is nobody in the commonwealth of learning who

does not profess himself a lover of truth: and there is not a rational creature that would not take it

amiss to be thought otherwise of. And yet, for all this, one may truly say, that there are very few

lovers of truth, for truth's sake, even amongst those who persuade themselves that they are so. How

a man may know whether he be so in earnest, is worth inquiry: and I think there is one unerring

mark of it, viz., The not entertaining any proposition with greater assurance than the proofs it is built

upon will warrant. Whoever goes beyond this measure of assent, it is plain, receives not the truth in

the love of it; loves not truth for truth's sake, but for some other bye-end. For the evidence that any

proposition is true (except such as are self-evident) lying only in the proofs a man has of it,

whatsoever degrees of assent he affords it beyond the degrees of that evidence, it is plain that all

the surplusage of assurance is owing to some other affection, and not to the love of truth: it being as

impossible that the love of truth should carry my assent above the evidence there is to me that it is

true, as that the love of truth should make me assent to any proposition for the sake of that evidence

which it has not, that it is true: which is in effect to love it as a truth, because it is possible or

probable that it may not be true. In any truth that gets not possession of our minds by the irresistible

light of self-evidence, or by the force of demonstration, the arguments that gain it assent are the

vouchers and gage of its probability to us; and we can receive it for no other than such as they

deliver it to our understandings. Whatsoever credit or authority we give to any proposition more than

it receives from the principles and proofs it supports itself upon, is owing to our inclinations that way,

and is so far a derogation from the love of truth as such: which, as it can receive no evidence from

our passions or interests, so it should receive no tincture from them.

2. A forwardness to dictate another's beliefs, from whence. The assuming an authority of dictating to

others, and a forwardness to prescribe to their opinions, is a constant concomitant of this bias and

corruption of our judgments. For how almost can it be otherwise, but that he should be ready to

impose on another's belief, who has already imposed on his own? Who can reasonably expect

arguments and conviction from him in dealing with others, whose understanding is not accustomed

to them in his dealing with himself? Who does violence to his own faculties, tyrannizes over his own

mind, and usurps the prerogative that belongs to truth alone, which is to command assent by only its

own authority, i.e., by and in proportion to that evidence which it carries with it.

3. Force of enthusiasm, in which reason is taken away. Upon this occasion I shall take the liberty to

consider a third ground of assent, which with some men has the same authority, and is as

confidently relied on as either faith or reason; I mean enthusiasm: which, laying by reason, would

set up revelation without it. Whereby in effect it takes away both reason and revelation, and

substitutes in the room of them the ungrounded fancies of a man's own brain, and assumes them

for a foundation both of opinion and conduct.

4. Reason and revelation. Reason is natural revelation, whereby the eternal Father of light and

fountain of all knowledge, communicates to mankind that portion of truth which he has laid within

the reach of their natural faculties: revelation is natural reason enlarged by a new set of discoveries

communicated by God immediately; which reason vouches the truth of, by the testimony and proofs

it gives that they come from God. So that he that takes away reason to make way for revelation,

puts out the light of both, and does much what the same as if he would persuade a man to put out

his eyes, the better to receive the remote light of an invisible star by a telescope.

5. Rise of enthusiasm. Immediate revelation being a much easier way for men to establish their

opinions and regulate their conduct than the tedious and not always successful labour of strict

reasoning, it is no wonder that some have been very apt to pretend to revelation, and to persuade

themselves that they are under the peculiar guidance of heaven in their actions and opinions,

especially in those of them which they cannot account for by the ordinary methods of knowledge

and principles of reason. Hence we see that, in all ages, men in whom melancholy has mixed with

devotion, or whose conceit of themselves has raised them into an opinion of a greater familiarity

with God, and a nearer admittance to his favour than is afforded to others, have often flattered

themselves with a persuasion of an immediate intercourse with the Deity, and frequent

communications from the Divine Spirit. God, I own, cannot be denied to be able to enlighten the

understanding by a ray darted into the mind immediately from the fountain of light: this they

understand he has promised to do, and who then has so good a title to expect it as those who are

his peculiar people, chosen by him, and depending on him?

6. Enthusiastic impulse. Their minds being thus prepared, whatever groundless opinion comes to

settle itself strongly upon their fancies is an illumination from the Spirit of God, and presently of

divine authority: and whatsoever odd action they find in themselves a strong inclination to do, that

impulse is concluded to be a call or direction from heaven, and must be obeyed: it is a commission

from above, and they cannot err in executing it.

7. What is meant by enthusiasm. This I take to be properly enthusiasm, which, though founded

neither on reason nor divine revelation, but rising from the conceits of a warmed or overweening

brain, works yet, where it once gets footing, more powerfully on the persuasions and actions of men

than either of those two, or both together: men being most forwardly obedient to the impulses they

receive from themselves; and the whole man is sure to act more vigorously where the whole man is

carried by a natural motion. For strong conceit, like a new principle, carries all easily with it, when

got above common sense, and freed from all restraint of reason and check of reflection, it is

heightened into a divine authority, in concurrence with our own temper and inclination.

8. Enthusiasm accepts its supposed illumination without search and proof. Though the odd opinions

and extravagant actions enthusiasm has run men into were enough to warn them against this wrong

principle, so apt to misguide them both in their belief and conduct: yet the love of something

extraordinary, the ease and glory it is to be inspired, and be above the common and natural ways of

knowledge, so flatters many men's laziness, ignorance, and vanity, that, when once they are got into

this way of immediate revelation, of illumination without search, and of certainty without proof and

without examination, it is a hard matter to get them out of it. Reason is lost upon them, they are

above it: they see the light infused into their understandings, and cannot be mistaken; it is clear and

visible there, like the light of bright sunshine; shows itself, and needs no other proof but its own

evidence: they feel the hand of God moving them within, and the impulses of the Spirit, and cannot

be mistaken in what they feel. Thus they support themselves, and are sure reasoning hath nothing

to do with what they see and feel in themselves: what they have a sensible experience of admits no

doubt, needs no probation. Would he not be ridiculous, who should require to have it proved to him

that the light shines, and that he sees it? It is its own proof, and can have no other. When the Spirit

brings light into our minds, it dispels darkness. We see it as we do that of the sun at noon, and need

not the twilight of reason to show it us. This light from heaven is strong, clear, and pure; carries its

own demonstration with it: and we may as naturally take a glow-worm to assist us to discover the

sun, as to examine the celestial ray by our dim candle, reason.

9. Enthusiasm how to be discovered. This is the way of talking of these men: they are sure, because

they are sure: and their persuasions are right, because they are strong in them. For, when what they

say is stripped of the metaphor of seeing and feeling, this is all it amounts to: and yet these similes

so impose on them, that they serve them for certainty in themselves, and demonstration to others.

10. The supposed internal light examined. But to examine a little soberly this internal light, and this

feeling on which they build so much. These men have, they say, clear light, and they see; they have

awakened sense, and they feel: this cannot, they are sure, be disputed them. For when a man says

he sees or feels, nobody can deny him that he does so. But here let me ask: This seeing, is it the

perception of the truth of the proposition, or of this, that it is a revelation from God? This feeling, is it

a perception of an inclination or fancy to do something, or of the Spirit of God moving that

inclination? These are two very different perceptions, and must be carefully distinguished, if we

would not impose upon ourselves. I may perceive the truth of a proposition, and yet not perceive

that it is an immediate revelation from God. I may perceive the truth of a proposition in Euclid,

without its being, or my perceiving it to be, a revelation: nay, I may perceive I came not by this

knowledge in a natural way, and so may conclude it revealed, without perceiving that it is a

revelation of God. Because there be spirits which, without being divinely commissioned, may excite

those ideas in me, and lay them in such order before my mind, that I may perceive their connexion.

So that the knowledge of any proposition coming into my mind, I know not how, is not a perception

that it is from God. Much less is a strong persuasion that it is true, a perception that it is from God, or

so much as true. But however it be called light and seeing, I suppose it is at most but belief and

assurance: and the proposition taken for a revelation is not such as they know to be true, but take to

be true. For where a proposition is known to be true, revelation is needless: and it is hard to

conceive how there can be a revelation to any one of what he knows already. If therefore it be a

proposition which they are persuaded, but do not know, to be true, whatever they may call it, it is not

seeing, but believing. For these are two ways whereby truth comes into the mind, wholly distinct, so

that one is not the other. What I see, I know to be so, by the evidence of the thing itself: what I

believe, I take to be so upon the testimony of another. But this testimony I must know to be given, or

else what ground have I of believing? I must see that it is God that reveals this to me, or else I see

nothing. The question then here is: How do I know that God is the revealer of this to me; that this

impression is made upon my mind by his Holy Spirit; and that therefore I ought to obey it? If I know

not this, how great soever the assurance is that I am possessed with, it is groundless; whatever light

I pretend to, it is but enthusiasm. For, whether the proposition supposed to be revealed be in itself

evidently true, or visibly probable, or, by the natural ways of knowledge, uncertain, the proposition

that must be well grounded and manifested to be true, is this, That God is the revealer of it, and that

what I take to be a revelation is certainly put into my mind by Him, and is not an illusion dropped in

by some other spirit, or raised by my own fancy. For, if I mistake not, these men receive it for true,

because they presume God revealed it. Does it not, then, stand them upon to examine upon what

grounds they presume it to be a revelation from God? or else all their confidence is mere

presumption: and this light they are so dazzled with is nothing but an ignis fatuus, that leads them

constantly round in this circle; It is a revelation, because they firmly believe it; and they believe it,

because it is a revelation.

11. Enthusiasm fails of evidence, that the proposition is from God. In all that is of divine revelation,

there is need of no other proof but that it is an inspiration from God: for he can neither deceive nor

be deceived. But how shall it be known that any proposition in our minds is a truth infused by God; a

truth that is revealed to us by him, which he declares to us, and therefore we ought to believe? Here

it is that enthusiasm fails of the evidence it pretends to. For men thus possessed, boast of a light

whereby they say they are enlightened, and brought into the knowledge of this or that truth. But if

they know it to be a truth, they must know it to be so, either by its own self-evidence to natural

reason, or by the rational proofs that make it out to be so. If they see and know it to be a truth, either

of these two ways, they in vain suppose it to be a revelation. For they know it to be true the same

way that any other man naturally may know that it is so, without the help of revelation. For thus, all

the truths, of what kind soever, that men uninspired are enlightened with, came into their minds, and

are established there. If they say they know it to be true, because it is a revelation from God, the

reason is good: but then it will be demanded how they know it to be a revelation from God. If they

say, by the light it brings with it, which shines bright in their minds, and they cannot resist: I beseech

them to consider whether this be any more than what we have taken notice of already, viz., that it is

a revelation, because they strongly believe it to be true. For all the light they speak of is but a strong,

though ungrounded persuasion of their own minds, that it is a truth. For rational grounds from proofs

that it is a truth, they must acknowledge to have none; for then it is not received as a revelation, but

upon the ordinary grounds that other truths are received: and if they believe it to be true because it

is a revelation, and have no other reason for its being a revelation, but because they are fully

persuaded, without any other reason, that it is true, then they believe it to be a revelation only

because they strongly believe it to be a revelation; which is a very unsafe ground to proceed on,

either in our tenets or actions. And what readier way can there be to run ourselves into the most

extravagant errors and miscarriages, than thus to set up fancy for our supreme and sole guide, and

to believe any proposition to be true, any action to be right, only because we believe it to be so? The

strength of our persuasions is no evidence at all of their own rectitude: crooked things may be as

stiff and inflexible as straight: and men may be as positive and peremptory in error as in truth. How

come else the untractable zealots in different and opposite parties? For if the light, which every one

thinks he has in his mind, which in this case is nothing but the strength of his own persuasion, be an

evidence that it is from God, contrary opinions have the same title to be inspirations; and God will be

not only the Father of lights, but of opposite and contradictory lights, leading men contrary ways;

and contradictory propositions will be divine truths, if an ungrounded strength of assurance be an

evidence that any proposition is a Divine Revelation.

12. Firmness of persuasion no Proof that any proposition is from God. This cannot be otherwise,

whilst firmness of persuasion is made the cause of believing, and confidence of being in the right is

made an argument of truth. St. Paul himself believed he did well, and that he had a call to it, when

he persecuted the Christians, whom he confidently thought in the wrong: but yet it was he, and not

they, who were mistaken. Good men are men still liable to mistakes, and are sometimes warmly

engaged in errors, which they take for divine truths, shining in their minds with the clearest light.

13. Light in the mind, what. Light, true light, in the mind is, or can be, nothing else but the evidence

of the truth of any proposition; and if it be not a self-evident proposition, all the light it has, or can

have, is from the clearness and validity of those proofs upon which it is received. To talk of any

other light in the understanding is to put ourselves in the dark, or in the power of the Prince of

Darkness, and, by our own consent, to give ourselves up to delusion to believe a lie. For, if strength

of persuasion be the light which must guide us; I ask how shall any one distinguish between the

delusions of Satan, and the inspirations of the Holy Ghost? He can transform himself into an angel

of light. And they who are led by this Son of the Morning are as fully satisfied of the illumination, i.e.,

are as strongly persuaded that they are enlightened by the Spirit of God as any one who is so: they

acquiesce and rejoice in it, are actuated by it: and nobody can be more sure, nor more in the right (if

their own belief may be judge) than they.

14. Revelation must be judged of by reason. He, therefore, that will not give himself up to all the

extravagances of delusion and error must bring this guide of his light within to the trial. God when he

makes the prophet does not unmake the man. He leaves all his faculties in the natural state, to

enable him to judge of his inspirations, whether they be of divine original or no. When he illuminates

the mind with supernatural light, he does not extinguish that which is natural. If he would have us

assent to the truth of any proposition, he either evidences that truth by the usual methods of natural

reason, or else makes it known to be a truth which he would have us assent to by his authority, and

convinces us that it is from him, by some marks which reason cannot be mistaken in. Reason must

be our last judge and guide in everything. I do not mean that we must consult reason, and examine

whether a proposition revealed from God can be made out by natural principles, and if it cannot, that

then we may reject it: but consult it we must, and by it examine whether it be a revelation from God

or no: and if reason finds it to be revealed from God, reason then declares for it as much as for any

other truth, and makes it one of her dictates. Every conceit that thoroughly warms our fancies must

pass for an inspiration, if there be nothing but the strength of our persuasions, whereby to judge of

our persuasions: if reason must not examine their truth by something extrinsical to the persuasions

themselves, inspirations and delusions, truth and falsehood, will have the same measure, and will

not be possible to be distinguished.

15. Belief no proof of revelation. If this internal light, or any proposition which under that title we take

for inspired, be conformable to the principles of reason, or to the word of God, which is attested

revelation, reason warrants it, and we may safely receive it for true, and be guided by it in our belief

and actions: if it receive no testimony nor evidence from either of these rules, we cannot take it for a

revelation, or so much as for true, till we have some other mark that it is a revelation, besides our

believing that it is so. Thus we see the holy men of old, who had revelations from God, had

something else besides that internal light of assurance in their own minds, to testify to them that it

was from God. They were not left to their own persuasions alone, that those persuasions were from

God, but had outward signs to convince them of the Author of those revelations. And when they

were to convince others, they had a power given them to justify the truth of their commission from

heaven, and by visible signs to assert the divine authority of a message they were sent with. Moses

saw the bush burn without being consumed, and heard a voice out of it: this was something besides

finding an impulse upon his mind to go to Pharaoh, that he might bring his brethren out of Egypt:

and yet he thought not this enough to authorize him to go with that message, till God, by another

miracle of his rod turned into a serpent, had assured him of a power to testify his mission, by the

same miracle repeated before them whom he was sent to. Gideon was sent by an angel to deliver

Israel from the Midianites, and yet he desired a sign to convince him that this commission was from

God. These, and several the like instances to be found among the prophets of old, are enough to

show that they thought not an inward seeing or persuasion of their own minds, without any other

proof, a sufficient evidence that it was from God; though the Scripture does not everywhere mention

their demanding or having such proofs.

16. Criteria of a divine revelation. In what I have said I am far from denying, that God can, or doth

sometimes enlighten men's minds in the apprehending of certain truths or excite them to good

actions, by the immediate influence and assistance of the Holy Spirit, without any extraordinary

signs accompanying it. But in such cases too we have reason and Scripture; unerring rules to know

whether it be from God or no. Where the truth embraced is consonant to the revelation in the written

word of God, or the action conformable to the dictates of right reason or holy writ, we may be

assured that we run no risk in entertaining it as such: because, though perhaps it be not an

immediate revelation from God, extraordinarily operating on our minds, yet we are sure it is

warranted by that revelation which he has given us of truth. But it is not the strength of our private

persuasion within ourselves, that can warrant it to be a light or motion from heaven: nothing can do

that but the written Word of God without us, or that standard of reason which is common to us with

all men. Where reason or Scripture is express for any opinion or action, we may receive it as of

divine authority: but it is not the strength of our own persuasions which can by itself give it that

stamp. The bent of our own minds may favour it as much as we please: that may show it to be a

fondling of our own, but will by no means prove it to be an offspring of heaven, and of divine original.