CHAPTER XXVII.

OF IDENTITY AND DIVERSITY.

1. Wherein Identity consists.

ANOTHER occasion the mind often takes of comparing, is the very being

of things, when, considering ANYTHING AS EXISTING AT ANY DETERMINED

TIME AND PLACE, we compare it with ITSELF EXISTING AT ANOTHER TIME, and

thereon form the ideas of IDENTITY and DIVERSITY. When we see anything

to be in any place in any instant of time, we are sure (be it what it

will) that it is that very thing, and not another which at that same

time exists in another place, how like and undistinguishable soever it

may be in all other respects: and in this consists IDENTITY, when the

ideas it is attributed to vary not at all from what they were that

moment wherein we consider their former existence, and to which we

compare the present. For we never finding, nor conceiving it possible,

that two things of the same kind should exist in the same place at the

same time, we rightly conclude, that, whatever exists anywhere at any

time, excludes all of the same kind, and is there itself alone. When

therefore we demand whether anything be the SAME or no, it refers

always to something that existed such a time in such a place, which it

was certain, at that instant, was the same with itself, and no other.

From whence it follows, that one thing cannot have two beginnings of

existence, nor two things one beginning; it being impossible for two

things of the same kind to be or exist in the same instant, in the very

same place; or one and the same thing in different places. That,

therefore, that had one beginning, is the same thing; and that which

had a different beginning in time and place from that, is not the same,

but diverse. That which has made the difficulty about this relation has

been the little care and attention used in having precise notions of

the things to which it is attributed.

2. Identity of Substances.

We have the ideas but of three sorts of substances: 1. GOD. 2. FINITE

INTELLIGENCES. 3. BODIES.

First, GOD is without beginning, eternal, unalterable, and everywhere,

and therefore concerning his identity there can be no doubt.

Secondly, FINITE SPIRITS having had each its determinated time and

place of beginning to exist, the relation to that time and place will

always determine to each of them its identity, as long as it exists.

Thirdly, The same will hold of every PARTICLE OF MATTER, to which no

addition or subtraction of matter being made, it is the same. For,

though these three sorts of substances, as we term them, do not exclude

one another out of the same place, yet we cannot conceive but that they

must necessarily each of them exclude any of the same kind out of the

same place: or else the notions and names of identity and diversity

would be in vain, and there could be no such distinctions of

substances, or anything else one from another. For example: could two

bodies be in the same place at the same time; then those two parcels of

matter must be one and the same, take them great or little; nay, all

bodies must be one and the same. For, by the same reason that two

particles of matter may be in one place, all bodies may be in one

place: which, when it can be supposed, takes away the distinction of

identity and diversity of one and more, and renders it ridiculous. But

it being a contradiction that two or more should be one, identity and

diversity are relations and ways of comparing well founded, and of use

to the understanding.

3. Identity of modes and relations.

All other things being but modes or relations ultimately terminated in

substances, the identity and diversity of each particular existence of

them too will be by the same way determined: only as to things whose

existence is in succession, such as are the actions of finite beings,

v. g. MOTION and THOUGHT, both which consist in a continued train of

succession, concerning THEIR diversity there can be no question:

because each perishing the moment it begins, they cannot exist in

different times, or in different places, as permanent beings can at

different times exist in distant places; and therefore no motion or

thought, considered as at different times, can be the same, each part

thereof having a different beginning of existence.

4. Principium Individuationis.

From what has been said, it is easy to discover what is so much

inquired after, the PRINCIPIUM INDIVIDUATIONIS; and that, it is plain,

is existence itself; which determines a being of any sort to a

particular time and place, incommunicable to two beings of the same

kind. This, though it seems easier to conceive in simple substances or

modes; yet, when reflected on, is not more difficult in compound ones,

if care be taken to what it is applied: v.g. let us suppose an atom,

i.e. a continued body under one immutable superficies, existing in a

determined time and place; it is evident, that, considered in any

instant of its existence, it is in that instant the same with itself.

For, being at that instant what it is, and nothing else, it is the

same, and so must continue as long as its existence is continued; for

so long it will be the same, and no other. In like manner, if two or

more atoms be joined together into the same mass, every one of those

atoms will be the same, by the foregoing rule: and whilst they exist

united together, the mass, consisting of the same atoms, must be the

same mass, or the same body, let the parts be ever so differently

jumbled. But if one of these atoms be taken away, or one new one added,

it is no longer the same mass or the same body. In the state of living

creatures, their identity depends not on a mass of the same particles,

but on something else. For in them the variation of great parcels of

matter alters not the identity: an oak growing from a plant to a great

tree, and then lopped, is still the same oak; and a colt grown up to a

horse, sometimes fat, sometimes lean, is all the while the same horse:

though, in both these cases, there may be a manifest change of the

parts; so that truly they are not either of them the same masses of

matter, though they be truly one of them the same oak, and the other

the same horse. The reason whereof is, that, in these two cases—a MASS

OF MATTER and a LIVING BODY—identity is not applied to the same thing.

5. Identity of Vegetables.

We must therefore consider wherein an oak differs from a mass of

matter, and that seems to me to be in this, that the one is only the

cohesion of particles of matter any how united, the other such a

disposition of them as constitutes the parts of an oak; and such an

organization of those parts as is fit to receive and distribute

nourishment, so as to continue and frame the wood, bark, and leaves,

&c., of an oak, in which consists the vegetable life. That being then

one plant which has such an organization of parts in one coherent body,

partaking of one common life, it continues to be the same plant as long

as it partakes of the same life, though that life be communicated to

new particles of matter vitally united to the living plant, in a like

continued organization conformable to that sort of plants. For this

organization, being at any one instant in any one collection of matter,

is in that particular concrete distinguished from all other, and IS

that individual life, which existing constantly from that moment both

forwards and backwards, in the same continuity of insensibly succeeding

parts united to the living body of the plant, it has that identity

which makes the same plant, and all the parts of it, parts of the same

plant, during all the time that they exist united in that continued

organization, which is fit to convey that common life to all the parts

so united.

6. Identity of Animals.

The case is not so much different in BRUTES but that any one may hence

see what makes an animal and continues it the same. Something we have

like this in machines, and may serve to illustrate it. For example,

what is a watch? It is plain it is nothing but a fit organization or

construction of parts to a certain end, which, when a sufficient force

is added to it, it is capable to attain. If we would suppose this

machine one continued body, all whose organized parts were repaired,

increased, or diminished by a constant addition or separation of

insensible parts, with one common life, we should have something very

much like the body of an animal; with this difference, That, in an

animal the fitness of the organization, and the motion wherein life

consists, begin together, the motion coming from within; but in

machines the force coming sensibly from without, is often away when the

organ is in order, and well fitted to receive it.

7. The Identity of Man.

This also shows wherein the identity of the same MAN consists; viz. in

nothing but a participation of the same continued life, by constantly

fleeting particles of matter, in succession vitally united to the same

organized body. He that shall place the identity of man in anything

else, but, like that of other animals, in one fitly organized body,

taken in any one instant, and from thence continued, under one

organization of life, in several successively fleeting particles of

matter united to it, will find it hard to make an embryo, one of years,

mad and sober, the SAME man, by any supposition, that will not make it

possible for Seth, Ismael, Socrates, Pilate, St. Austin, and Caesar

Borgia, to be the same man. For if the identity of SOUL ALONE makes the

same MAN; and there be nothing in the nature of matter why the same

individual spirit may not be united to different bodies, it will be

possible that those men, living in distant ages, and of different

tempers, may have been the same man: which way of speaking must be from

a very strange use of the word man, applied to an idea out of which

body and shape are excluded. And that way of speaking would agree yet

worse with the notions of those philosophers who allow of

transmigration, and are of opinion that the souls of men may, for their

miscarriages, be detruded into the bodies of beasts, as fit

habitations, with organs suited to the satisfaction of their brutal

inclinations. But yet I think nobody, could he be sure that the SOUL of

Heliogabalus were in one of his hogs, would yet say that hog were a MAN

or Heliogabalus.

8. Idea of Identity suited to the Idea it is applied to.

It is not therefore unity of substance that comprehends all sorts of

identity, or will determine it in every case; but to conceive and judge

of it aright, we must consider what idea the word it is applied to

stands for: it being one thing to be the same SUBSTANCE, another the

same MAN, and a third the same PERSON, if PERSON, MAN, and SUBSTANCE,

are three names standing for three different ideas;—for such as is the

idea belonging to that name, such must be the identity; which, if it

had been a little more carefully attended to, would possibly have

prevented a great deal of that confusion which often occurs about this

matter, with no small seeming difficulties, especially concerning

PERSONAL identity, which therefore we shall in the next place a little

consider.

9. Same man.

An animal is a living organized body; and consequently the same animal,

as we have observed, is the same continued LIFE communicated to

different particles of matter, as they happen successively to be united

to that organized living body. And whatever is talked of other

definitions, ingenious observation puts it past doubt, that the idea in

our minds, of which the sound man in our mouths is the sign, is nothing

else but of an animal of such a certain form. Since I think I may be

confident, that, whoever should see a creature of his own shape or

make, though it had no more reason all its life than a cat or a parrot,

would call him still a MAN; or whoever should hear a cat or a parrot

discourse, reason, and philosophize, would call or think it nothing but

a CAT or a PARROT; and say, the one was a dull irrational man, and the

other a very intelligent rational parrot.

10. Same man.

For I presume it is not the idea of a thinking or rational being alone

that makes the IDEA OF A MAN in most people’s sense: but of a body, so

and so shaped, joined to it; and if that be the idea of a man, the same

successive body not shifted all at once, must, as well as the same

immaterial spirit, go to the making of the same man.

11. Personal Identity.

This being premised, to find wherein personal identity consists, we

must consider what PERSON stands for;—which, I think, is a thinking

intelligent being, that has reason and reflection, and can consider

itself as itself, the same thinking thing, in different times and

places; which it does only by that consciousness which is inseparable

from thinking, and, as it seems to me, essential to it: it being

impossible for any one to perceive without PERCEIVING that he does

perceive. When we see, hear, smell, taste, feel, meditate, or will

anything, we know that we do so. Thus it is always as to our present

sensations and perceptions: and by this every one is to himself that

which he calls SELF:—it not being considered, in this case, whether the

same self be continued in the same or divers substances. For, since

consciousness always accompanies thinking, and it is that which makes

every one to be what he calls self, and thereby distinguishes himself

from all other thinking things, in this alone consists personal

identity, i.e. the sameness of a rational being: and as far as this

consciousness can be extended backwards to any past action or thought,

so far reaches the identity of that person; it is the same self now it

was then; and it is by the same self with this present one that now

reflects on it, that that action was done.

12. Consciousness makes personal Identity.

But it is further inquired, whether it be the same identical substance.

This few would think they had reason to doubt of, if these perceptions,

with their consciousness, always remained present in the mind, whereby

the same thinking thing would be always consciously present, and, as

would be thought, evidently the same to itself. But that which seems to

make the difficulty is this, that this consciousness being interrupted

always by forgetfulness, there being no moment of our lives wherein we

have the whole train of all our past actions before our eyes in one

view, but even the best memories losing the sight of one part whilst

they are viewing another; and we sometimes, and that the greatest part

of our lives, not reflecting on our past selves, being intent on our

present thoughts, and in sound sleep having no thoughts at all, or at

least none with that consciousness which remarks our waking thoughts,—I

say, in all these cases, our consciousness being interrupted, and we

losing the sight of our past selves, doubts are raised whether we are

the same thinking thing, i.e. the same SUBSTANCE or no. Which, however

reasonable or unreasonable, concerns not PERSONAL identity at all. The

question being what makes the same person; and not whether it be the

same identical substance, which always thinks in the same person,

which, in this case, matters not at all: different substances, by the

same consciousness (where they do partake in it) being united into one

person, as well as different bodies by the same life are united into

one animal, whose identity is preserved in that change of substances by

the unity of one continued life. For, it being the same consciousness

that makes a man be himself to himself, personal identity depends on

that only, whether it be annexed solely to one individual substance, or

can be continued in a succession of several substances. For as far as

any intelligent being CAN repeat the idea of any past action with the

same consciousness it had of it at first, and with the same

consciousness it has of any present action; so far it is the same

personal self. For it is by the consciousness it has of its present

thoughts and actions, that it is SELF TO ITSELF now, and so will be the

same self, as far as the same consciousness can extend to actions past

or to come; and would be by distance of time, or change of substance,

no more two persons, than a man be two men by wearing other clothes

to-day than he did yesterday, with a long or a short sleep between: the

same consciousness uniting those distant actions into the same person,

whatever substances contributed to their production.

13. Personal Identity in Change of Substance.

That this is so, we have some kind of evidence in our very bodies, all

whose particles, whilst vitally united to this same thinking conscious

self, so that WE FEEL when they are touched, and are affected by, and

conscious of good or harm that happens to them, are a part of

ourselves; i.e. of our thinking conscious self. Thus, the limbs of his

body are to every one a part of himself; he sympathizes and is

concerned for them. Cut off a hand, and thereby separate it from that

consciousness he had of its heat, cold, and other affections, and it is

then no longer a part of that which is himself, any more than the

remotest part of matter. Thus, we see the SUBSTANCE whereof personal

self consisted at one time may be varied at another, without the change

of personal identity; there being no question about the same person,

though the limbs which but now were a part of it, be cut off.

14. Personality in Change of Substance.

But the question is, Whether if the same substance which thinks be

changed, it can be the same person; or, remaining the same, it can be

different persons?

And to this I answer: First, This can be no question at all to those

who place thought in a purely material animal constitution, void of an

immaterial substance. For, whether their supposition be true or no, it

is plain they conceive personal identity preserved in something else

than identity of substance; as animal identity is preserved in identity

of life, and not of substance. And therefore those who place thinking

in an immaterial substance only, before they can come to deal with

these men, must show why personal identity cannot be preserved in the

change of immaterial substances, or variety of particular immaterial

substances, as well as animal identity is preserved in the change of

material substances, or variety of particular bodies: unless they will

say, it is one immaterial spirit that makes the same life in brutes, as

it is one immaterial spirit that makes the same person in men; which

the Cartesians at least will not admit, for fear of making brutes

thinking things too.

15. Whether in Change of thinking Substances there can be one Person.

But next, as to the first part of the question, Whether, if the same

thinking substance (supposing immaterial substances only to think) be

changed, it can be the same person? I answer, that cannot be resolved

but by those who know there can what kind of substances they are that

do think; and whether the consciousness of past actions can be

transferred from one thinking substance to another. I grant were the

same consciousness the same individual action it could not: but it

being a present representation of a past action, why it may not be

possible, that that may be represented to the mind to have been which

really never was, will remain to be shown. And therefore how far the

consciousness of past actions is annexed to any individual agent, so

that another cannot possibly have it, will be hard for us to determine,

till we know what kind of action it is that cannot be done without a

reflex act of perception accompanying it, and how performed by thinking

substances, who cannot think without being conscious of it. But that

which we call the same consciousness, not being the same individual

act, why one intellectual substance may not have represented to it, as

done by itself, what IT never did, and was perhaps done by some other

agent—why, I say, such a representation may not possibly be without

reality of matter of fact, as well as several representations in dreams

are, which yet whilst dreaming we take for true—will be difficult to

conclude from the nature of things. And that it never is so, will by

us, till we have clearer views of the nature of thinking substances, be

best resolved into the goodness of God; who, as far as the happiness or

misery of any of his sensible creatures is concerned in it, will not,

by a fatal error of theirs, transfer from one to another that

consciousness which draws reward or punishment with it. How far this

may be an argument against those who would place thinking in a system

of fleeting animal spirits, I leave to be considered. But yet, to

return to the question before us, it must be allowed, that, if the same

consciousness (which, as has been shown, is quite a different thing

from the same numerical figure or motion in body) can be transferred

from one thinking substance to another, it will be possible that two

thinking substances may make but one person. For the same consciousness

being preserved, whether in the same or different substances, the

personal identity is preserved.

16. Whether, the same immaterial Substance remaining, there can be two

Persons.

As to the second part of the question, Whether the same immaterial

substance remaining, there may be two distinct persons; which question

seems to me to be built on this,—Whether the same immaterial being,

being conscious of the action of its past duration, may be wholly

stripped of all the consciousness of its past existence, and lose it

beyond the power of ever retrieving it again: and so as it were

beginning a new account from a new period, have a consciousness that

CANNOT reach beyond this new state. All those who hold pre-existence

are evidently of this mind; since they allow the soul to have no

remaining consciousness of what it did in that pre-existent state,

either wholly separate from body, or informing any other body; and if

they should not, it is plain experience would be against them. So that

personal identity, reaching no further than consciousness reaches, a

pre-existent spirit not having continued so many ages in a state of

silence, must needs make different persons. Suppose a Christian

Platonist or a Pythagorean should, upon God’s having ended all his

works of creation the seventh day, think his soul hath existed ever

since; and should imagine it has revolved in several human bodies; as I

once met with one, who was persuaded his had been the SOUL of Socrates

(how reasonably I will not dispute; this I know, that in the post he

filled, which was no inconsiderable one, he passed for a very rational

man, and the press has shown that he wanted not parts or

learning;)—would any one say, that he, being not conscious of any of

Socrates’s actions or thoughts, could be the same PERSON with Socrates?

Let any one reflect upon himself, and conclude that he has in himself

an immaterial spirit, which is that which thinks in him, and, in the

constant change of his body keeps him the same: and is that which he

calls HIMSELF: let him also suppose it to be the same soul that was in

Nestor or Thersites, at the siege of Troy, (for souls being, as far as

we know anything of them, in their nature indifferent to any parcel of

matter, the supposition has no apparent absurdity in it,) which it may

have been, as well as it is now the soul of any other man: but he now

having no consciousness of any of the actions either of Nestor or

Thersites, does or can he conceive himself the same person with either

of them? Can he be concerned in either of their actions? attribute them

to himself, or think them his own more than the actions of any other

men that ever existed? So that this consciousness, not reaching to any

of the actions of either of those men, he is no more one SELF with

either of them than of the soul of immaterial spirit that now informs

him had been created, and began to exist, when it began to inform his

present body; though it were never so true, that the same SPIRIT that

informed Nestor’s or Thersites’ body were numerically the same that now

informs his. For this would no more make him the same person with

Nestor, than if some of the particles of smaller that were once a part

of Nestor were now a part of this man the same immaterial substance,

without the same consciousness, no more making the same person, by

being united to any body, than the same particle of matter, without

consciousness, united to any body, makes the same person. But let him

once find himself conscious of any of the actions of Nestor, he then

finds himself the same person with Nestor.

17. The body, as well as the soul, goes to the making of a Man.

And thus may we be able, without any difficulty, to conceive the same

person at the resurrection, though in a body not exactly in make or

parts the same which he had here,—the same consciousness going along

with the soul that inhabits it. But yet the soul alone, in the change

of bodies, would scarce to any one but to him that makes the soul the

man, be enough to make the same man. For should the soul of a prince,

carrying with it the consciousness of the prince’s past life, enter and

inform the body of a cobbler, as soon as deserted by his own soul,

every one sees he would be the same PERSON with the prince, accountable

only for the prince’s actions: but who would say it was the same MAN?

The body too goes to the making the man, and would, I guess, to

everybody determine the man in this case, wherein the soul, with all

its princely thoughts about it, would not make another man: but he

would be the same cobbler to every one besides himself. I know that, in

the ordinary way of speaking, the same person, and the same man, stand

for one and the same thing. And indeed every one will always have a

liberty to speak as he pleases, and to apply what articulate sounds to

what ideas he thinks fit, and change them as often as he pleases. But

yet, when we will inquire what makes the same SPIRIT, MAN, or PERSON,

we must fix the ideas of spirit, man, or person in our minds; and

having resolved with ourselves what we mean by them, it will not be

hard to determine, in either of them, or the like, when it is the same,

and when not.

18. Consciousness alone unites actions into the same Person.

But though the same immaterial substance or soul does not alone,

wherever it be, and in whatsoever state, make the same MAN; yet it is

plain, consciousness, as far as ever it can be extended—should it be to

ages past—unites existences and actions very remote in time into the

same PERSON, as well as it does the existences and actions of the

immediately preceding moment: so that whatever has the consciousness of

present and past actions, is the same person to whom they both belong.

Had I the same consciousness that I saw the ark and Noah’s flood, as

that I saw an overflowing of the Thames last winter, or as that I write

now, I could no more doubt that I who write this now, that saw the

Thames overflowed last winter, and that viewed the flood at the general

deluge, was the same SELF,—place that self in what SUBSTANCE you

please—than that I who write this am the same MYSELF now whilst I write

(whether I consist of all the same substance material or immaterial, or

no) that I was yesterday. For as to this point of being the same self,

it matters not whether this present self be made up of the same or

other substances—I being as much concerned, and as justly accountable

for any action that was done a thousand years since, appropriated to me

now by this self-consciousness, as I am for what I did the last moment.

19. Self depends on Consciousness, not on Substance.

SELF is that conscious thinking thing,—whatever substance made up of,

(whether spiritual or material, simple or compounded, it matters

not)—which is sensible or conscious of pleasure and pain, capable of

happiness or misery, and so is concerned for itself, as far as that

consciousness extends. Thus every one finds that, whilst comprehended

under that consciousness, the little finger is as much a part of

himself as what is most so. Upon separation of this little finger,

should this consciousness go along with the little finger, and leave

the rest of the body, it is evident the little finger would be the

person, the same person; and self then would have nothing to do with

the rest of the body. As in this case it is the consciousness that goes

along with the substance, when one part is separate from another, which

makes the same person, and constitutes this inseparable self: so it is

in reference to substances remote in time. That with which the

consciousness of this present thinking thing CAN join itself, makes the

same person, and is one self with it, and with nothing else; and so

attributes to itself, and owns all the actions of that thing, as its

own, as far as that consciousness reaches, and no further; as every one

who reflects will perceive.

20. Persons, not Substances, the Objects of Reward and Punishment.

In this personal identity is founded all the right and justice of

reward and punishment; happiness and misery being that for which every

one is concerned for HIMSELF, and not mattering what becomes of any

SUBSTANCE, not joined to, or affected with that consciousness. For, as

it is evident in the instance I gave but now, if the consciousness went

along with the little finger when it was cut off, that would be the

same self which was concerned for the whole body yesterday, as making

part of itself, whose actions then it cannot but admit as its own now.

Though, if the same body should still live, and immediately from the

separation of the little finger have its own peculiar consciousness,

whereof the little finger knew nothing, it would not at all be

concerned for it, as a part of itself, or could own any of its actions,

or have any of them imputed to him.

21. Which shows wherein Personal identity consists.

This may show us wherein personal identity consists: not in the

identity of substance, but, as I have said, in the identity of

consciousness, wherein if Socrates and the present mayor of

Queenborough agree, they are the same person: if the same Socrates

waking and sleeping do not partake of the same consciousness, Socrates

waking and sleeping is not the same person. And to punish Socrates

waking for what sleeping Socrates thought, and waking Socrates was

never conscious of, would be no more of right, than to punish one twin

for what his brother-twin did, whereof he knew nothing, because their

outsides were so like, that they could not be distinguished; for such

twins have been seen.

22. Absolute oblivion separates what is thus forgotten from the person,

but not from the man.

But yet possibly it will still be objected,—Suppose I wholly lose the

memory of some parts of my life, beyond a possibility of retrieving

them, so that perhaps I shall never be conscious of them again; yet am

I not the same person that did those actions, had those thoughts that I

once was conscious of, though I have now forgot them? To which I

answer, that we must here take notice what the word _I_ is applied to;

which, in this case, is the MAN only. And the same man being presumed

to be the same person, I is easily here supposed to stand also for the

same person. But if it be possible for the same man to have distinct

incommunicable consciousness at different times, it is past doubt the

same man would at different times make different persons; which, we

see, is the sense of mankind in the solemnest declaration of their

opinions, human laws not punishing the mad man for the sober man’s

actions, nor the sober man for what the mad man did,—thereby making

them two persons: which is somewhat explained by our way of speaking in

English when we say such an one is ‘not himself,’ or is ‘beside

himself’; in which phrases it is insinuated, as if those who now, or at

least first used them, thought that self was changed; the selfsame

person was no longer in that man.

23. Difference between Identity of Man and of Person.

But yet it is hard to conceive that Socrates, the same individual man,

should be two persons. To help us a little in this, we must consider

what is meant by Socrates, or the same individual MAN.

First, it must be either the same individual, immaterial, thinking

substance; in short, the same numerical soul, and nothing else.

Secondly, or the same animal, without any regard to an immaterial soul.

Thirdly, or the same immaterial spirit united to the same animal.

Now, take which of these suppositions you please, it is impossible to

make personal identity to consist in anything but consciousness; or

reach any further than that does.

For, by the first of them, it must be allowed possible that a man born

of different women, and in distant times, may be the same man. A way of

speaking which, whoever admits, must allow it possible for the same man

to be two distinct persons, as any two that have lived in different

ages without the knowledge of one another’s thoughts.

By the second and third, Socrates, in this life and after it, cannot be

the same man any way, but by the same consciousness; and so making

human identity to consist in the same thing wherein we place personal

identity, there will be difficulty to allow the same man to be the same

person. But then they who place human identity in consciousness only,

and not in something else, must consider how they will make the infant

Socrates the same man with Socrates after the resurrection. But

whatsoever to some men makes a man, and consequently the same

individual man, wherein perhaps few are agreed, personal identity can

by us be placed in nothing but consciousness, (which is that alone

which makes what we call SELF,) without involving us in great

absurdities.

24.

But is not a man drunk and sober the same person? why else is he

punished for the fact he commits when drunk, though he be never

afterwards conscious of it? Just as much the same person as a man that

walks, and does other things in his sleep, is the same person, and is

answerable for any mischief he shall do in it. Human laws punish both,

with a justice suitable to THEIR way of knowledge;—because, in these

cases, they cannot distinguish certainly what is real, what

counterfeit: and so the ignorance in drunkenness or sleep is not

admitted as a plea. But in the Great Day, wherein the secrets of all

hearts shall be laid open, it may be reasonable to think, no one shall

be made to answer for what he knows nothing of; but shall receive his

doom, his conscience accusing or excusing him.

25. Consciousness alone unites remote existences into one Person.

Nothing but consciousness can unite remote existences into the same

person: the identity of substance will not do it; for whatever

substance there is, however framed, without consciousness there is no

person: and a carcass may be a person, as well as any sort of substance

be so, without consciousness.

Could we suppose two distinct incommunicable consciousnesses acting the

same body, the one constantly by day, the other by night; and, on the

other side, the same consciousness, acting by intervals, two distinct

bodies: I ask, in the first case, whether the day and the night—man

would not be two as distinct persons as Socrates and Plato? And

whether, in the second case, there would not be one person in two

distinct bodies, as much as one man is the same in two distinct

clothings? Nor is it at all material to say, that this same, and this

distinct consciousness, in the cases above mentioned, is owing to the

same and distinct immaterial substances, bringing it with them to those

bodies; which, whether true or no, alters not the case: since it is

evident the personal identity would equally be determined by the

consciousness, whether that consciousness were annexed to some

individual immaterial substance or no. For, granting that the thinking

substance in man must be necessarily supposed immaterial, it is evident

that immaterial thinking thing may sometimes part with its past

consciousness, and be restored to it again: as appears in the

forgetfulness men often have of their past actions; and the mind many

times recovers the memory of a past consciousness, which it had lost

for twenty years together. Make these intervals of memory and

forgetfulness to take their turns regularly by day and night, and you

have two persons with the same immaterial spirit, as much as in the

former instance two persons with the same body. So that self is not

determined by identity or diversity of substance, which it cannot be

sure of, but only by identity of consciousness.

26. Not the substance with which the consciousness may be united.

Indeed it may conceive the substance whereof it is now made up to have

existed formerly, united in the same conscious being: but,

consciousness removed, that substance is no more itself, or makes no

more a part of it, than any other substance; as is evident in the

instance we have already given of a limb cut off, of whose heat, or

cold, or other affections, having no longer any consciousness, it is no

more of a man’s self than any other matter of the universe. In like

manner it will be in reference to any immaterial substance, which is

void of that consciousness whereby I am myself to myself: so that I

cannot upon recollection join with that present consciousness whereby I

am now myself, it is, in that part of its existence, no more MYSELF

than any other immaterial being. For, whatsoever any substance has

thought or done, which I cannot recollect, and by my consciousness make

my own thought and action, it will no more belong to me, whether a part

of me thought or did it, than if it had been thought or done by any

other immaterial being anywhere existing.

27. Consciousness unites substances, material or spiritual, with the

same personality.

I agree, the more probable opinion is, that this consciousness is

annexed to, and the affection of, one individual immaterial substance.

But let men, according to their diverse hypotheses, resolve of that as

they please. This every intelligent being, sensible of happiness or

misery, must grant—that there is something that is HIMSELF, that he is

concerned for, and would have happy; that this self has existed in a

continued duration more than one instant, and therefore it is possible

may exist, as it has done, months and years to come, without any

certain bounds to be set to its duration; and may be the same self, by

the same consciousness continued on for the future. And thus, by this

consciousness he finds himself to be the same self which did such and

such an action some years since, by which he comes to be happy or

miserable now. In all which account of self, the same numerical

SUBSTANCE is not considered a making the same self; but the same

continued CONSCIOUSNESS, in which several substances may have been

united, and again separated from it, which, whilst they continued in a

vital union with that wherein this consciousness then resided, made a

part of that same self. Thus any part of our bodies, vitally united to

that which is conscious in us, makes a part of ourselves: but upon

separation from the vital union by which that consciousness is

communicated, that which a moment since was part of ourselves, is now

no more so than a part of another man’s self is a part of me: and it is

not impossible but in a little time may become a real part of another

person. And so we have the same numerical substance become a part of

two different persons; and the same person preserved under the change

of various substances. Could we suppose any spirit wholly stripped of

all its memory of consciousness of past actions, as we find our minds

always are of a great part of ours, and sometimes of them all; the

union or separation of such a spiritual substance would make no

variation of personal identity, any more than that of any particle of

matter does. Any substance vitally united to the present thinking being

is a part of that very same self which now is; anything united to it by

a consciousness of former actions, makes also a part of the same self,

which is the same both then and now.

28. Person a forensic Term.

PERSON, as I take it, is the name for this self. Wherever a man finds

what he calls himself, there, I think, another may say is the same

person. It is a forensic term, appropriating actions and their merit;

and so belongs only to intelligent agents, capable of a law, and

happiness, and misery. This personality extends itself beyond present

existence to what is past, only by consciousness,—whereby it becomes

concerned and accountable; owns and imputes to itself past actions,

just upon the same ground and for the same reason as it does the

present. All which is founded in a concern for happiness, the

unavoidable concomitant of consciousness; that which is conscious of

pleasure and pain, desiring that that self that is conscious should be

happy. And therefore whatever past actions it cannot reconcile or

APPROPRIATE to that present self by consciousness, it can be no more

concerned in than if they had never been done: and to receive pleasure

or pain, i.e. reward or punishment, on the account of any such action,

is all one as to be made happy or miserable in its first being, without

any demerit at all. For, supposing a MAN punished now for what he had

done in another life, whereof he could be made to have no consciousness

at all, what difference is there between that punishment and being

CREATED miserable? And therefore, conformable to this, the apostle

tells us, that, at the great day, when every one shall ‘receive

according to his doings, the secrets of all hearts shall be laid open.’

The sentence shall be justified by the consciousness all persons shall

have, that THEY THEMSELVES, in what bodies soever they appear, or what

substances soever that consciousness adheres to, are the SAME that

committed those actions, and deserve that punishment for them.

29. Suppositions that look strange are pardonable in our ignorance.

I am apt enough to think I have, in treating of this subject, made some

suppositions that will look strange to some readers, and possibly they

are so in themselves. But yet, I think they are such as are pardonable,

in this ignorance we are in of the nature of that thinking thing that

is in us, and which we look on as OURSELVES. Did we know what it was;

or how it was tied to a certain system of fleeting animal spirits; or

whether it could or could not perform its operations of thinking and

memory out of a body organized as ours is; and whether it has pleased

God that no one such spirit shall ever be united to any but one such

body, upon the right constitution of whose organs its memory should

depend; we might see the absurdity of some of those suppositions I have

made. But taking, as we ordinarily now do (in the dark concerning these

matters,) the soul of a man for an immaterial substance, independent

from matter, and indifferent alike to it all; there can, from the

nature of things, be no absurdity at all to suppose that the same SOUL

may at different times be united to different BODIES, and with them

make up for that time one MAN: as well as we suppose a part of a

sheep’s body yesterday should be a part of a man’s body to-morrow, and

in that union make a vital part of Meliboeus himself, as well as it did

of his ram.

30. The Difficulty from ill Use of Names.

To conclude: Whatever substance begins to exist, it must, during its

existence, necessarily be the same: whatever compositions of substances

begin to exist, during the union of those substances, the concrete must

be the same: whatsoever mode begins to exist, during its existence it

is the same: and so if the composition be of distinct substances and

different modes, the same rule holds. Whereby it will appear, that the

difficulty or obscurity that has been about this matter rather rises

from the names ill-used, than from any obscurity in things themselves.

For whatever makes the specific idea to which the name is applied, if

that idea be steadily kept to, the distinction of anything into the

same and divers will easily be conceived, and there can arise no doubt

about it.

31. Continuance of that which we have made to be our complex idea of

man makes the same man.

For, supposing a rational spirit be the idea of a MAN, it is easy to

know what is the same man, viz. the same spirit—whether separate or in

a body—will be the SAME MAN. Supposing a rational spirit vitally united

to a body of a certain conformation of parts to make a man; whilst that

rational spirit, with that vital conformation of parts, though

continued in a fleeting successive body, remains, it will be the SAME

MAN. But if to any one the idea of a man be but the vital union of

parts in a certain shape; as long as that vital union and shape remain

in a concrete, no otherwise the same but by a continued succession of

fleeting particles, it will be the SAME MAN. For, whatever be the

composition whereof the complex idea is made, whenever existence makes

it one particular thing under any denomination, THE SAME EXISTENCE

CONTINUED preserves it the SAME individual under the same denomination.

An Essay Concerning Humane Understanding, Volume 1 MDCXC, Based on the 2nd Edition, Books 1 and 2 · 第 27 / 33 章