To him who looks back on the history of our own science, the analytic

science of mind, which, as I have already said, may almost be

regarded, in its most important aspects, as a sort of intellectual

chemistry,--there will appear the same alternate widening and narrowing

of classification. The mental phenomena are, in one age or country, of

many classes; in a succeeding age, or in a different country, they are

of fewer; and again, after the lapse of another age, or the passage of

a river or a mountain, they are of many more. In our own island, after

the decay of scholastic metaphysics, from _Hobbes_ to _Hume_,--if I

may use these names, as dates of eras, in a science, on which, with

all their unfortunate errors on many of the most important points of

human belief, they both unquestionably threw a degree of light, which

rendered their errors on these subjects the more to be lamented,--in

this long and brilliant period,--which, of course, includes, with

many other eminent names, the very eminent author of the _Essay on

the Human Understanding_,--there was a tendency to simplify, as much

as possible, the classification of the phenomena of mind; and more

regard, perhaps, was paid to the similarities of phenomena, than to

their differences. Subsequently to this period, however, the philosophy

of Dr Reid, and, in general, of the metaphysicians of this part of the

island, has had the opposite tendency,--to enlarge, as I conceive, far

beyond what was necessary, the number of classes which they considered

as too limited before;--and, in proportion, more regard has perhaps

been paid to the differences, or supposed differences of phenomena,

than to their resemblances. There can be no doubt, at least, that we

are now accustomed to speak of more powers or operations of the mind,

than even the schoolmen themselves, fond as they were of all the nicest

subtleties of infinitesimal subdivision.

The difference in this respect, however, is not so striking, when we

consider successions of ages, in which, of course, from our general

notion of the effects of time, we are accustomed to expect variety, as

when we look to neighbouring countries at the same period, especially

if we consider the advantage of that noble art, which might have been

supposed, by the wide diffusion which it gives to opinion, to have

removed, as to human sentiment, all the boundaries of mere geographic

distance. Slight, however, as the distance is which separates the two

countries, the philosophy of France, in its views of the phenomena

of mind, and the philosophy of Britain, particularly of this part of

Britain, have for more than half a century differed as much, as in

the philosophy of different ages; certainly in a degree far greater,

than, but for experience, it would have been easy for us to suppose.

In France, all the phenomena of mind have been, during that period,

regarded as sensations, or transformed sensations, that is to say, as

sensations variously simplified or combined. The works of Condillac,

who professed to have founded his system on that of Locke, but who

evidently did not understand fully what Locke intended, gave the

principal tone to this philosophic belief; and it has been fostered

since by that passion for the simple and the wonderful, which, when

these two objects can be united, is perhaps the strongest of all our

intellectual passions. In the system of the French metaphysicians,

they are united in a very high degree. That this universal presence of

sensation, whether true or false, is at least very _simple_, cannot

be denied; and there is certainly abundant matter of wonder in the

supposed discovery, that all the variety of our internal feelings are

those very feelings of a different class, to which they have so little

appearance of belonging. It is a sort of perpetual masquerade, in which

we enjoy the pleasure of recognizing a familiar friend in a variety of

grotesque dresses, and the pleasure also of enjoying the mistakes of

those around us, who take him for a different person, merely because

he has changed his robe and his mask. The fallacy of the doctrine is

precisely of that kind, which, if once admitted, is most difficult

to be shaken off. It relates to a system which is very simple, very

wonderful, and obviously true in part. Indeed, when there are so many

actual transformations of our feelings, so many emotions, of which the

principal elements are so little recognizable, in the complex affection

that results from them,--the supposition that all the varieties of

our consciousness may be only modes of one simple class of primary

feelings, false as it is, is far from being the most striking example

which the history of our science presents of the extravagance of

philosophic conjecture.

The speculations of the French school of philosophers, to which I have

now alluded, as to the supposed universal transmutations of feeling,

bear, as you can scarcely fail to have remarked, a very obvious

resemblance, in extreme simplicity, to the speculations of alchemists

on transmutations of another kind. The resemblance is stated with great

force by a living French author, himself a metaphysician of no humble

rank. I allude to a passage which you will find quoted by Mr Stewart,

in one of the valuable preliminary dissertations of his volume of

Essays, from a work of De Gerando.

“It required nothing less,”--says this ingenious writer,--“than the

united splendour of the discoveries brought to light by the new

chemical school, to tear the minds of men from the pursuit of a

simple and primary element; a pursuit renewed in every age, with an

indefatigable perseverance, and always renewed in vain. With what

feelings of contempt would the physiologists of former times have

looked down on the chemists of the present age, whose timid and

circumscribed system admits nearly _forty_ different principles in

the composition of bodies! What a subject of ridicule would the new

nomenclature have afforded to an alchemist!

“The Philosophy of Mind has its alchemists also; men whose studies are

directed to the pursuit of _one single principle_, into which the whole

science may be resolved; and who flatter themselves with the hope of

discovering the _grand secret_, by which the pure gold of truth may be

produced at pleasure.”[134]

This secret of the intellectual _opus magnum_, Condillac conceived

himself to have found; or, rather, as I have already said, he ascribed

the grand discovery to our own illustrious countryman. In this

reference the whole school of French metaphysicians have very strangely

agreed; conferring on Mr Locke a praise which they truly meant to do

him honour, but praise which the object of it would have hastened to

disclaim. He certainly was _not_ that _alchemist_ in the science of

mind which they conceived him to be; though he was a _chemist_ in it,

unquestionably, and a chemist of the highest rank.

FOOTNOTES:

[133] D. Heinsius. De Contemptu Mortis, Lib. i.

[134] Chap. I. Sect. ii. p. 15, 16. 4to. Edit.

LECTURE XXXIII.

ON THE CLASSIFICATION OF THE MENTAL PHENOMENA, BY LOCKE--BY

CONDILLAC--BY REID--A NEW CLASSIFICATION.

Gentlemen, in the conclusion of my last Lecture, I alluded to the

system of the French metaphysicians, as an instance of error from

_extreme simplification_ in the analysis of that class of our feelings

which we are now considering.

Of this system,--which deserves some fuller notice, on account both

of the great talents which have stated and defended it, and of its

very wide diffusion,--I may remark, in the first place, that it is

far from being, what its author and his followers consider it to be,

a mere developement of the system of our illustrious countryman. On

the contrary, they agree with Locke only in one point, and that a

negative one,--as to which all philosophers may now be considered as

unanimous,--the _denial_ of what were termed _innate ideas_. In every

thing which can be strictly said to be _positive_ in his system, this

great philosopher is nearly as completely opposed to Condillac and his

followers, as to the unintelligible wranglers of the ancient schools.

To convince you of this, a very slight statement of the two systems

will be sufficient.

According to Locke, the mind, to whose existence thought or feeling is

not essential, might, but for sensation, have remained forever without

feeling of any kind. From _sensation_ we acquire our first _ideas_,--to

use a word, which, from its ambiguity I am not very fond of using, but

which, from its constant occurrence, is a very important one in his

system. These ideas we cannot merely remember as past, and compound or

decompound them in various ways, but we can compare them in all their

variety of relations; and according as their objects are agreeable or

disagreeable, can love or hate those objects, and fear or hope their

return. We remember not external things only, so as to have ideas of

them,--ideas of sensation,--but we remember also our very _remembrance

itself_,--our abstractions, comparisons, love, hate, hope, fear, and

all the varieties of reflex thought, or feeling; and our remembrance

of these internal feelings, or operations of our mind, furnishes

another abundant source of ideas, which he terms ideas of reflection.

The _comparison_, however,--and it is this point alone which can be of

any consequence in reference to the French system,--the comparison, as

a state of the mind, even when it is exercised on our sensations or

perceptions, is not itself a sensation or perception,--nor is our hope,

or fear, or any other of our reflex feelings; for then, instead of

the two sources of our ideas, the distinction of which forms the very

groundwork of the Essay on the Human Understanding, we should truly

have but one source, and our ideas of reflection would themselves be

the very ideas of sensation to which they are opposed. Our sensations,

indeed, directly or indirectly give rise to our reflex feelings,

but they do not _involve_ them; they are only prior in order,--the

occasions, on which certain powers or susceptibilities of feeling in

the mind evolve themselves.

Such is the system of Locke, on those very points, on which the French

philosophers most strangely profess to regard him as their great

authority. But it is surely very different from the system, which they

affect to found on it. According to them, sensation is not merely that

primary affection of mind, which gives occasion to our other feelings,

but is itself, as variously composed or decomposed, all the variety

of our feelings. “If we consider,” says Condillac, in a paragraph,

which may be said to contain a summary of his whole doctrine, with

respect to the mind--“if we consider that to remember, to compare, to

judge, to distinguish, to imagine, to be astonished, to have abstract

ideas, to have ideas of number and duration, to know truths, whether

general or particular, are but so many modes of being attentive; that

to have passions, to love, to hate, to hope, to fear, to will, are but

so many different modes of desire; and that _attention_, in the one

case, and _desire_, in the other case, of which all these feelings

are modes, are themselves, in their origin, nothing more than modes

of sensation, we cannot but conclude, that sensation _involves_ in

itself--_enveloppe_--all the faculties of the soul.”[135]

Whatever we may think of this doctrine, as true or false, ingenious or

absurd, it seems, at least, scarcely possible, that we should regard

it as the doctrine of Locke--of him, who sets out, with a primary

division of our ideas, into two distinct classes, one class of which

alone belongs to sensation; and who considers even this class of our

mere ideas, not as involving all the operations of the mind with

respect to them, but only as the objects of the mind, in these various

operations;--as being what we compare, not the very feeling of our

comparison itself--the _inducements_ to passion, not what constitutes

any of our passions, as a state, or series of states, of the mind.

To render the paragraph, which I have quoted from Condillac, at all

accordant with the real doctrine of Locke, it would be necessary to

reverse it, in almost every proposition which it involves.

The doctrine, then, as exhibited by Condillac and his followers,

whatever merit it may have in itself, or however void it may be of

merit of any kind, is _not_ the doctrine of him from whom it is said to

be derived. But its agreement or disagreement with the system of any

other philosopher, is comparatively, of very little consequence. The

great question is, whether it be _just_,--whether it truly have the

merit of presenting a faithful picture of the mental phenomena, which

it professes to develope to us more clearly.

Have we reason to believe, then, that all the various feelings of our

mind, which form the classification of its internal affections, are

merely, to use Condillac's phrase, _transformed sensations_?

Transformed sensations, it is evident, on his own principles, though

the phrase might seem vague and ambiguous, in any other system, can

mean nothing more than sensations more or less lively, or more or less

complex. It cannot signify any thing that is absolutely different or

superadded; for, if there be any thing, in any complex feeling of

the mind, which did not originally form a sensation, or a part of a

complex sensation, this addition, however slight, is itself a proof,

that all the phenomena of the mind are not mere sensations, variously

repeated--that sensation, in short, does not “_involve_” all the

affections and faculties of the soul.

Is every feeling, then, in the whole series of our varied

consciousness, referable, in all its parts, to _sensation_, as its

original source?--not its source merely, in one very evident respect,

as that which is, in order, truly primary to all our other feelings,

but as that which essentially constitutes them all, in the same manner

as the waters of the fountain are afterwards the very waters which flow

along the mead?

To prove the affirmative of this, it is astonishing, with what

readiness Condillac,--who is generally regarded as a nice and subtile

reasoner, and who certainly, as his work on that subject shows, had

studied with attention the great principles of logic,--passes from

faculty to faculty, and from emotion to emotion, professing to find

sensation everywhere, without exhibiting to us even the semblance of

what he seeks, and yet repeating the constant affirmative, that he

_has_ found it,--as if the frequent repetition, were itself a proof

of what is frequently repeated,--but proving only that the various

feelings of the mind agree, as might be supposed, in being feelings of

the mind--not that they agree in being _sensations_, as that word is

used by himself, and as it is, in common philosophic use, distinguished

from the other more general term. Except the mere frequency of the

affirmation, and the unquestionable priority in order of time, of our

sensations to our other feelings,--there is not the slightest evidence,

in his system, of that universal transmutation which it affirms.

It may be necessary to mention, that, in these remarks on the system

of the illustrious preceptor of the Prince of Parma, I allude, in

particular, to his Treatise “_of Sensations_,” which contains his

more mature opinions on the subject--not to his earlier work, on _the

origin of human knowledge_, in which he has not ventured on so bold

a simplification; or at least, has not expressed it in language so

precise.

The great error of Condillac, as it appears to me, consists in

supposing that, when he has shown the circumstance from which any

effect _results_, he has shown this result to be essentially the _same_

with the circumstance which produced it.

Certain sensations have ceased to exist, certain other feelings have

immediately arisen;--these new feelings are therefore _the others_

under another shape. Such is the secret, but very false, logic, which

seems to pervade his whole doctrine on the subject.

If all that is meant were merely, that whatever may be the varying

feelings of the mind, the mind itself, in all this variety, when it

remembers or compares, hates or loves, is still the same substance,

as that which saw, heard, smelled, tasted, touched, there could be

nothing objectionable in the doctrine, but there would then certainly

be nothing new in it;--and, instead of thinking either of Locke or of

Condillac, we might think, at pleasure, in stating such a doctrine

of any of the innumerable assertors of the spirituality of the

thinking principle. Such, however, is not the meaning of the French

metaphysician. He asserts this identity of substance, indeed, like the

philosophers who preceded him, but he asserts still more. It is not the

permanent substance of _mind_ only which is the same. Its _affections_,

or states, which seem, in many respects, absolutely different, are

the same as those very affections, or states, from which they seem to

differ--and are the _same_, merely because they have succeeded them;

for, as I have already said, except the frequency of his affirmation,

that they are the same, there is no other evidence but that of the mere

succession in order of time, by which he attempts to substantiate their

sameness.

The origin of this false reasoning I conceive to be the analogy of

MATTER, to which his system, by reducing _all_ the affections of mind

to that class which is immediately connected with external things,

must have led him to pay peculiar attention. Yet, in justice to him,

I must remark, that, although a system which reduces every feeling to

mere sensation, and consequently connects every feeling, in its origin,

with the qualities of matter, must be favourable to materialism,

and has unquestionably fostered this, in a very high degree, in the

French school of metaphysics, there is no reason to consider Condillac

himself as a materialist; on the contrary, his works contain many very

just remarks on the errors of materialism. But still his system, as I

have said, by leading him continually to our organs of sense, and to

the objects which act upon them, must have rendered the phenomena of

matter peculiarly apt to recur to his mind in all its speculations.

Now, in _matter_, there can be no question as to the reality of that

transmutation, which, as applied to mind, forms the chief principle

of his intellectual analysis. In the chemistry of the material

elements, the compounds are the very elements themselves. When any

two substances, present together, vanish as it were from our view,

and a third substance, whether like or unlike to either of the former,

presents itself in their place, we believe this third substance,

however dissimilar it may appear, to be only the coexistence of the two

others; and indeed, since we have no reason to believe that any change

takes place, in the number of the corpuscles of which our planet is

composed, the whole series of its corpuscular changes can be only new

combinations of particles that existed before.

The doctrine of Pythagoras, in its application to the material world,

is in this respect philosophically accurate:

Tempus edax rerum, tuque invidiosa vetustas

Omnia destruitis, vitiataque dentibus ævi

Paulatim lenta consumitis omnia morte.

Nec species sua cuique manet; rerumque novatrix

Ex aliis alias reparat natura figuras.

Nec perit in toto quicquam, mihi credite, mundo,

Sed variat faciemque novat; _nascique_ vocatur

Incipere esse aliud quam quod fuit ante,--_morique_

Desinere illud idem. Cum sint hue forsitan illa,

Hæc translata illuc, summa tamen omnia constant.[136]

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