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Man Has
No Identical Self
by David Hume
There are some philosophers. who imagine we are
every moment intimately conscious of what we call
our Self; that we feel its existence and its
continuance in existence; and are certain, beyond
the evidence of a demonstration, both o its perfect
identity and simplicity. The strongest sensation,
the most violent passion, say they, instead of
distracting us from this view, only fix it the more
intensely, and make us consider their influence on
self either by their pain or pleasure. To
attempt a farther proof of this were to weaken its
evidence; since no proof can be derived from any
fact, of which we are so intimately conscious; nor
is there any thing, of which we can be certain, if
we doubt of this.
Unluckily all these positive assertions are
contrary to that very experience, which is pleaded
for them, nor have we any idea of self after
the manner it is here explained. For from what
impression could this idea be derived? This
question it is impossible to answer without a
manifest contradiction and absurdity; and yet it is
a question, which must necessarily be answered, if
we would have the idea of self pass for clear and
intelligible, It must be some one impression, that
gives rise to every real idea. But self or person
is not any one impression, but that to which our
several impressions and ideas are supposed to have
a reference. If any impression gives rise to the
idea of self, that impression must continue
invariably the same, through the whole course of
our lives; since self is supposed to exist after
that manner. But there is no impression constant
and invariable. Pain and pleasure, grief and joy,
passions and sensations succeed each other, and
never all exist at the same time. It cannot,
therefore, be from any of these impressions, or
from any other, that the idea of self is derived;
and consequently there is no such idea.
But farther, what must become of all our
particular perceptions upon this hypothesis? All
these are different, and distinguishable, and
separable from each other, and may be separately
considered, and may exist separately, and have no
Deed of tiny thing to support their existence.
After what manner, therefore, do they belong to
self; and how are they connected with it? For my
part, when I enter most intimately into what I call
myself, I always stumble on some particular
perception or other, of heat or cold, light or
shade, love or hatred, pain or pleasure. I never
can catch myself at any time without a
perception, and never can observe any thing but the
perception. When my perceptions are removed for any
time, as by sound sleep; so long am I insensible of
myself, and may truly be said not to exist.
And were all my perceptions removed by death, and
could I neither think, nor feel, nor see, nor love,
nor hate after the dissolution of my body, I should
be entirely annihilated, nor do I conceive what is
farther requisite to make me a perfect non-entity.
If any one, upon serious and unprejudiced
reflection thinks he has a different notion of
himself, I must confess I call reason no
longer with him. All I can allow him is, that he
may be in the right as well as I, and that we are
essentially different in this particular. He may,
perhaps, perceive something simple and continued,
which he calls himself; though I am certain
there is no such principle in me.
But setting aside some metaphysicians of this
kind, I may venture to affirm of the rest of
mankind, that they are nothing but a bundle or
collection of different perceptions, which succeed
each other with an inconceivable rapidity, and are
in a perpetual flux and movement. Our eyes cannot
turn in their sockets without varying our
perceptions. Our thought is still more variable
than our sight; and all our other senses and
faculties contribute to this change; nor is there
any single power of the soul, which remains
unalterably the same, perhaps for one moment. The
mind is a kind of theatre, where several
perceptions successively make their appearance;
pass, re-pass, glide away, and mingle in an
infinite variety of postures and situations. There
is properly no simplicity in it at one time,
nor identity in different; whatever natural
propension we may have to imagine that simplicity
and identity. The comparison of the theatre must
not mislead us. They are the successive perceptions
only, that constitute the mind; nor have we the
most distant notion of the place, where these
scenes are represented, or of the materials, of
which it is composed.
What then gives us so great a propension to
ascribe an identity to these successive
perceptions, and to suppose ourselves possest of an
invariable and uninterrupted existence through the
whole course of our lives? . . .
We have a distinct idea of an object, that
remains invariable and uninterrupted through a
supposed variation of time; and this idea we call
that of identity or sameness. We have
also a distinct idea of several different objects
existing in succession, and connected together by a
close relation; and this to an accurate view
affords as perfect a notion of diversity, as
if there was no manner of relation among the
objects. But though these two ideas of identity,
and a succession of related objects be in
themselves perfectly distinct, and even contrary,
yet it is certain, that in our common way of
thinking they are generally confounded with each
other. That action of the imagination, by which we
consider the uninterrupted and invariable object,
and that by which we reflect on the succession of
related objects, are almost the same to the
feeling, nor is there much more effort of thought
required in the latter case than in the former. The
relation facilitates the transition of the mind
from one object to another, and renders its passage
as smooth as if it contemplated one continued
object. This resemblance is the cause of the
confusion and mistake, and makes us substitute the
notion of identity, instead of that of related
objects. However at one instant we may consider the
related succession as variable or interrupted, we
are sure the next to ascribe to it a perfect
identity, and regard it as enviable and
uninterrupted. Our propensity to this mistake is so
great from the resemblance above-mentioned, that we
fall into it before we are aware; and though we
incessantly correct ourselves by reflection, and
return to a more accurate method of thinking, yet
we cannot long sustain our philosophy, or take off
this bias from the imagination. Our last resource
is to yield to it, and boldly assert that these
different related objects are in effect the same,
however interrupted and variable. In order to
justify to ourselves this absurdity, we often feign
some new and unintelligible principle, that
connects the objects together, and prevents their
interruption or variation. Thus we feign the
continued existence of the perceptions of our
senses, to remove the interruption: and run into
the notion of a soul, and self, and
substance, to disguise the variation. But we
may farther observe, that where we do not give rise
to such a fiction, our propension to confound
identity with relation is so great, that we are apt
to imagine something unknown and mysterious,
connecting the parts, beside their relation; and
this I take to be the case with regard to the
identity we ascribe to plants and vegetables. And
even when this does not take place, we still feel a
propensity to confound these ideas, though we are
not able fully to satisfy ourselves in that
particular, nor find any thing invariable and
uninterrupted to justify our notion of
identity.
Thus the controversy concerning identity is not
merely a dispute of words. For when we attribute
identity, in an improper sense, to variable or
interrupted objects, our mistake is not confined to
the expression, but is commonly attended with a
fiction, either of something invariable and
uninterrupted, or of something mysterious and
inexplicable, or at least with a propensity to such
fictions. . . .
We now proceed to explain the nature of
personal identity . . .
It is evident, that the identity, which we
attribute to the human mind, however perfect we may
imagine it to be, is not able to run the several
different perceptions into one, and make them lose
their characters of distinction and difference,
which are essential to them. It is still true, that
every distinct perception, which enters into the
composition of the mind, is a distinct existence,
and is different, and distinguishable, and
separable from every other perception, either
contemporary or successive. But, as,
notwithstanding this distinction and separability,
we suppose the whole train of perceptions to be
united by identity, a question naturally arises
concerning this relation of identity; whether it be
something that really binds our several perceptions
together, or only associates their ideas in the
imagination. That is, in other words, whether in
pronouncing concerning the identity of a person, we
observe some real bond among his perceptions, or
only feel one among the ideas we form of them. This
question we might easily decide, if we would
recollect what has been already proud at large,
that the understanding never observes any real
connexion among objects, and that even the union of
cause and effect, when strictly examined, resolves
itself into a customary association of ideas. For
from thence it evidently follows, that identity is
nothing really belonging to these different
perceptions, and uniting them together; but is
merely a quality, which we attribute to them,
because of the union of their ideas in the
imagination, when we reflect upon them. Now the
only qualities, which can give ideas an union in
the imagination, are these three relations
above-mentioned. There are the uniting principles
in the ideal world, and without them every distinct
object is separable by the mind, and may be
separately considered, and appears not to have any
more connexion with any other object, than if
disjoined by the greatest difference and
remoteness. It is, therefore, on some of these
three relations of resemblance, contiguity and
causation, that identity depends; and as the very
essence of these relations consists in their
producing an easy transition of ideas; it follows,
that our notions of personal identity, proceed
entirely from the smooth and uninterrupted progress
of the thought along a train of connected ideas,
according to the principles above-explained.
The only question, therefore, which remains, is,
by what relations this uninterrupted progress of
our thought is produced, when we consider the
successive existence of a mind or thinking person.
And here it is evident we must confine ourselves to
resemblance and causation, and must drop
contiguity, which has little or no influence in the
present case.
To begin with resemblance; suppose we
could see clearly into the breast of another, and
observe that succession of perceptions, which
constitutes his mind or thinking principle, and
suppose that he always preserves the memory of a
considerable part of past perceptions; it is
evident that nothing could more contribute to the
bestowing a relation on this succession amidst all
its variations. For what is the memory but a
faculty, by which we raise up the images of past
perceptions? And as an image necessarily resembles
its object, must not. the frequent placing of these
resembling perceptions in the chain of thought,
convey the imagination more easily from one link to
another, and make the whole seem like the
continuance of one object? In this particular,
then, the memory not only discovers the identity,
but also contributes to its production, by
producing the relation of resemblance among the
perceptions. The case is the same whether we
consider ourselves or others.
As to causation; we may observe, that the
true idea of the human mind, is to consider it as a
system of different perceptions or different
existences, which are linked together by the
relation of cause and effect, and mutually produce,
destroy, influence, and modify each other. Our
impressions give rise to their correspondent ideas;
said these ideas in their turn produce other
impressions. One thought chaces another, and draws
after it a third, by which it is expelled in its
turn. In this respect, I cannot compare the soul
more properly to any thing than to a republic or
commonwealth, in which the several members are
united by the reciprocal ties of government and
subordination, and give rise to other persons, who
propagate the same republic in the incessant
changes of its parts. And as the same individual
republic may not only change its members, but also
its laws and constitutions; in like manner the same
person may vary his character and disposition, as
well as his impressions and ideas, without losing
his identity. Whatever changes he endures, his
several parts are still connected by the relation
of causation. And in this view our identity with
regard to the passions serves to corroborate that
with regard to the imagination, by the making our
distant perceptions influence each other, and by
giving us a present concern for our past or future
pains or pleasures.
As a memory alone acquaints us with the
continuance and extent of this succession of
perceptions, it is to be considered, upon that
account chiefly, as the source of personal
identity. Had we no memory, we never should have
any notion of causation, nor consequently of that
chain of causes and effects, which constitute our
self or person. But having once acquired this
notion of causation from the memory, we can extend
the same chain of causes, and consequently the
identity of car persons beyond our memory, and can
comprehend times, and circumstances, and actions,
which we have entirely forgot, but suppose in
general to have existed. . . . In this view,
therefore, memory does not so much produce
as discover personal identity, by shewing us
the relation of cause and effect among our
different perceptions. It will be incumbent on
those, who affirm that memory produces entirely our
personal identity, to give a reason why we can thus
extend our identity beyond our memory.
The whole of this doctrine leads us to a
conclusion, which is of great importance in the
present affair, viz. that all the nice and subtle
questions concerning personal identity can never
possibly be decided.
Excerpted from A Treatise of
Human Nature, by David Hume (1739), Book I,
Part 4.
Biography
in The Radical Academy: David Hume
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A
Treatise of Human Nature, by David
Hume
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Cambridge Companion to Hume, by David Fate
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