'One of the proofs that, whatever may be the positive value

of his (Sir W. Hamilton's) achievements in metaphysics, he

had a greater capacity for the subject than many

metaphysicians of high reputation; and particularly than

his two distinguished predecessors in the same school of

thought--"Reid and Stewart."'--p. 131.

This is one of the greatest compliments to Sir W. Hamilton that the book

contains, and as such we are glad to cite it.

On the subject of Consciousness, Mr Mill has cited from Sir W. Hamilton

other good observations besides the one last alluded to; but,

unfortunately, these are often neutralized by opposite or inconsistent

opinions also cited from other parts of his works. The number of such

inconsistencies produced is indeed one remarkable feature in Sir W.

Hamilton's philosophical character. He seems to follow out energetically

(as Plato in his various dialogues) the vein of thought pervading his

mind at each particular moment, without troubling himself to look back

upon his own prior speculations. Even compared with the best views of

Sir W. Hamilton, however, Mr Mill's mode of handling the subject of

Consciousness exhibits signal improvement. To some of his observations

we shall call particular attention.

All philosophers agree that what Consciousness testifies is to be

believed; but they differ much on the question--To what points

Consciousness does testify? and even on the still deeper question--How

shall we proceed to ascertain what _are_ these attested points? What is

the proper method of studying or interrogating Consciousness? Upon this

Mr Mill remarks (pp. 145--147):--

'Here emerges the distinction between two different methods

of studying the problems of metaphysics; forming the radical

difference between the two great schools into which

metaphysicians are divided. One of these I shall call for

distinction, the _introspective_ method; the other, the

_psychological_. M. Cousin observes that Locke went wrong

from the beginning, by placing before himself, as the

question to be first resolved, the origin of our ideas.

This (he says) was commencing at the wrong end. The proper

course would have been to begin by determining what the

ideas now are; to ascertain what it is that Consciousness

now tells us; postponing till afterwards the attempt to

frame a theory concerning the origin of any of the mental

phenomena.

'I accept the question as M. Cousin states it; and I contend

that no attempt to determine what are the direct revelations

of Consciousness can be successful, or entitled to any

regard, unless preceded by what M. Cousin says ought only to

follow it--an inquiry into the origin of our acquired ideas.

For we have it not in our power to ascertain, by any direct

process, what Consciousness told us at the time when its

revelations were in their pristine purity. It only offers

itself to our inspection, as it exists now, when those

original revelations are overlaid and buried under a

mountainous heap of acquired notions and perceptions.

'It seems to M. Cousin, that if we examine with care and

minuteness our present states of Consciousness,

distinguishing and defining every ingredient which we find

to enter into them--every element that we seem to recognize

as real, and cannot "by merely concentrating our attention

upon it analyze into anything simpler--we reach the ultimate

and primary truths, which are the sources of all our

knowledge, and which cannot be denied or doubted without

denying or doubting the evidence of Consciousness

itself--that is, the only evidence that there is for

anything. I maintain this to be a misconception of the

condition imposed on inquirers by the difficulties of

psychological investigation. To begin the inquiry at the

point where M. Cousin takes it up is, in fact, to beg the

question. For he must be aware, if not of the fact, at least

of the belief of his opponents, that the laws of the

mind--the Laws of Association, according to one class of

thinkers, the Categories of the Understanding, according to

another--are capable of creating, out of those data of

Consciousness which are uncontested, purely mental

conceptions, which become so identified in thought with all

our states of Consciousness, that _we seem, and cannot but

seem, to receive them by direct intuition_. For example, the

belief in matter in the opinion of these thinkers is, or at

least may be, thus produced:--

'"The proof that any of the alleged Universal Beliefs, or

Principles of Common Sense, are affirmations of

Consciousness--supposes two things: that the beliefs exist,

and that they cannot possibly have been acquired. The first

is, in most cases, undisputed; but the second is a subject

of inquiry which often taxes the utmost resources of

psychologists. Locke was therefore right in believing that

'the origin of our ideas' is the main stress of the problem

of mental science, and the subject which must be first

considered in forming the theory of the Mind."'

This citation from Mr Mill's book is already almost too long, yet we

could have wished to prolong it still more, from the importance of some

of the succeeding paragraphs. It presents, in clear discrimination and

contrast, two opposite points of view according to which the phenomena

of mind are regarded by different philosophers, and the method of

studying them determined: the _introspective_ method, adopted by M.

Cousin and others--the _psychological_ or analytical method, pursued by

Locke and by many other eminent men since Locke--'the known and approved

method of physical science, adapted to the necessities of

psychology'--(p. 148).

There are passages of Sir W. Hamilton's writings in which he appears to

feel that the _introspective_ method alone is insufficient for the

interpretation of Consciousness, and that the analytical method must be

employed to reinforce it. But on this as on other points he is not

always consistent with himself. For in laying down the principle upon

which the primary truths of Consciousness, the original data of

intelligence, are to be ascertained and distinguished from

generalizations out of experience and custom, he declares that the one

single and certain mark is Necessity--they must be beliefs which we are

under the necessity of believing--of which we cannot get rid by any

mental effort. He decides this, of course, for himself, by the

_introspective_ method alone. He (with M. Cousin and other philosophers

who take the same view) does not apply the analytical method to inquire

whether his necessity of belief may not be a purely acquired necessity

and nowise congenital. It is, indeed, remarkable that these philosophers

do not even seek to apply the introspective method as far as that method

will really go. They are satisfied with introspection of their own

present minds; without collecting results of the like process as applied

to other minds, in different times and places. They declare various

beliefs to be necessary to the human mind universally, merely because

such is the actual fact with their own minds and with those immediately

around them; sometimes even in defiance of proof that there are (or have

been) persons not sharing such beliefs, and occasionally even believing

the contrary; therefore, when even the introspective method really

disallows their affirmative instead of sustaining it. This is, in

truth, an abuse of the introspective method; yet even if that method

were employed in its fullest extent--if the same incapability of

believing otherwise could be shown as common to all mankind--it might

still be only the effect of a strong association. The analytical method

must still be called in to ascertain whether we are forced to suppose

such incapability to be an original fact of consciousness, or whether it

may not have been generated in the mind by circumstances under the

natural working of the laws of association. It is certain that these

laws not only may, but must, give birth to artificial inconceivabilities

in the mind--and that some of these may be equal in strength to such, if

any, as are natural.

'The History of Science' (says Mr Mill, following out the

same train of reasoning which we read in the third Book of

his 'System of Logic') 'teems with inconceivabilities which

have been conquered; and with supposed necessary truths,

which have first ceased to be thought necessary, then to be

thought true, and have finally come to be deemed

impossible.'--p. 150.

After various observations, chiefly exhibiting the rashness of many

censures bestowed by Sir W. Hamilton on Brown, Mr Mill gives us three

valuable chapters (xi., xii., xiii.), wherein he analyzes the belief in

an External World, the Belief in Mind as a separate substance or

Noumenon, and the Primary Qualities of Matter. To each of these topics

he applies what he calls the _psychological_ method, as contrasted with

the simply _introspective_ method of Sir W. Hamilton (the Ego and

Non-Ego affirmed to be given together in the primary deliverance of

Consciousness) and so many other philosophers. He proves that these

beliefs are no way intuitive, but acquired products; and that the known

laws of Association are sufficient to explain how they are acquired;

especially the Law of Inseparable Association, together with that of

_Obliviscence_--a very useful, discriminating phrase, which we first

find employed in this volume--(p. 259 et passim). He defines Matter to

be a _permanent possibility of Sensation_; he maintains that this is

really all which (apart from philosophical theories) mankind in general

mean by it; he shows that mere possibilities of sensation not only may,

but must, according to the known Laws of Association, come to present

'to our artificialized Consciousness' a character of objectivity--(pp.

198, 199). The correlative subject, though present in fact and

indispensable, is eliminated out of conscious notice, according to the

Law of Obliviscence.

These chapters will well repay the most careful perusal. We can only

find room for one passage (pp. 214, 215):--

'Throughout the whole of our sensitive life, except its

first beginnings, we unquestionably refer our sensations to

a _me_ and _not-me_. As soon as I have formed, on the one

hand, the notion of Permanent Possibilities of Sensation,

and on the other, of that continued series of feelings which

I call my life--both these notions are, by an irresistible

association, recalled by every sensation I have. They

represent two things, with both of which the sensation of

the moment, be it what it may, stands in relation; and I

cannot be conscious of the sensation without being conscious

of it as related to these two things. They have accordingly

received relative names, expressive of the double relation

in question. The thread of consciousness which I apprehend

the relation as a part of, is called the _Subject_; the

group of Permanent Possibilities of Sensation to which I

refer it, and which is partially realized and actualized in

it, is called the _Object_ of the sensation. The sensation

itself ought to have a correlative name, or rather ought to

have two such names--one denoting the sensation as opposed

to its Subject, the other denoting it as opposed to its

Object; but it is a remarkable fact that this necessity has

not been felt, and that the need of a correlative name to

every relative one has been considered to be satisfied by

the terms Object and Subject themselves. It is true that

these two are related to one another, but only through the

sensation. We have no conception of either Subject or

Object, either Mind or Matter, except as something to which

we refer our sensations, and whatever other feelings we are

conscious of. _The very existence of them both, so far as

cognizable by us, consists only in the relation they

respectively bear to our states of feeling._ Their relation

to each other is only the relation between those two

relations. The immediate correlatives are, not the pair,

_Object, Subject,_ but the two pairs, Object, _Sensation

objectively considered_--Subject, _Sensation subjectively

considered_. The reason why this is overlooked might easily

be shown, and would furnish a good illustration of that

important part of the Laws of Association, which may be

termed the Laws of Obliviscence.'

This chapter, on the Primary Qualities of Matter, controverts the

opinion of Sir W. Hamilton, that extension, as consisting of

co-existent _partes extra partes_, is immediately and necessarily

apprehended by our consciousness. It cites, as well as confirms, the

copious proof given by Professor Bain (in his work on the Senses and the

Intellect) that our conception of extension is derived from our muscular

sensibility: that our sensation of _muscular motion impeded_ constitutes

that of filled space: that our conception of extension, as an aggregate

of co-existent parts, arises from the sense of sight, which comprehends

a great number of parts in a succession so rapid as to be confounded

with simultaneity--and which not only becomes the symbol of muscular and

tactile succession, but even acquires such ascendancy as to supersede

both of them in our consciousness. Confirmation is here given to this

important doctrine, not merely by observations from Mr Mill himself, but

also from the very curious narrative, discovered and produced by Sir W.

Hamilton, out of a work of the German philosopher, Platner. Platner

instituted a careful examination of a man born blind, and ascertained

that this man did not conceive extension as an aggregate of simultaneous

parts, but as a series of sensations experienced or to be experienced in

succession--(pp. 232, 233). The case reported from Platner both

corroborates the theory of Professor Bain, and receives its proper

interpretation from that theory; while it is altogether adverse to the

doctrine of Sir W. Hamilton--as is also another case, which he cites

from Maine de Biran:--

'It gives a very favourable idea of Sir W. Hamilton's

sincerity and devotion to truth (remarks Mr Mill, p. 247),

that he should have drawn from obscurity, and made generally

known, two cases so unfavourable to his own opinions.'

We think this remark perfectly just; and we would point out besides, in

appreciating Sir W. Hamilton's merits, that his appetite for facts was

useful to philosophy, as well as his appetite for speculation. But the

person whose usefulness to philosophy we prefer to bring into the

foreground, is Platner himself. He spent three weeks in patient

examination of this blind man, and the tenor of his report proves that

his sagacity in interpreting facts was equal to his patience in

collecting them. The rarity of all such careful and premeditated

observation of the facts of mind, appears to us one main reason why

(what Mr Mill calls) the _psychological_ theory finds so little

acceptance; and why those who maintain that what now seems a mental

integer was once a multiplicity of separate mental fragments, can

describe the antecedent steps of the change only as a _latens

processus_, which the reader never fully understands, and often will not

admit. Every man's mind is gradually built up from infancy to maturity;

the process is always going on before our eyes, yet the stages of

it--especially the earliest stages, the most pregnant with

instruction--are never studied and put on record by observers trained in

inductive logic, knowing beforehand what they ought to look for as the

_sine quâ non_ for proving or disproving any proposed theory. Such cases

as that cited by Platner--cases of one marked congenital defect of

sense, enabling us to apply the Method of Difference--are always within

reach; but few Platners are found to scrutinize and record them.

Historians of science describe to us the laborious and multiplied

observations, and the elaborate precaution for ensuring accuracy of

observation, which recent chemical and physical inquirers have found

indispensable for the establishment of their results. We cannot,

therefore, be surprised that mental philosophers, dealing with facts

even more obscure, and careless about enlarging, varying,

authenticating their records of particular facts, should have had

little success in establishing any results at all.

But if even those, who adopt the psychological theory, have been remiss

in the observation of particular mental facts,--those who deny the

theory have been far more than remiss; they have been blind to obvious

facts contradicting the principles which they lay down. Mr Mill, in

chap, xiv., deals with this denial, common to Mr Mansel with Sir W.

Hamilton. That philosophers so eminent as both of them should declare

confidently--'what I cannot but think must be _à priori_, or original to

thought; it cannot be engendered by experience upon custom' (p.

264)--appears to us as extraordinary as it does to Mr Mill. Though no

one ever surpassed Sir W. Hamilton in large acquaintance with the actual

diversities of human belief, and human incapacities of believing--yet he

never seems to have thought of bringing this acquaintance into account,

when he assured the students in his lecture-room, that custom,

experience, indissoluble association, were altogether insufficient to

engender a felt necessity of believing. Such forgetfulness of well-known

mental facts cannot be reproached to the advocates of the psychological

theory.

In chap. xv. Mr Mill examines Sir W. Hamilton's doctrine on unconscious

mental modifications. He points out the confused manner in which Sir W.

Hamilton has conceived _mental latency_, as well as the inconclusive

character of the reasoning whereby he refutes the following doctrine of

Dugald Stewart--That in the most rapid trains of association, each

separate item must have been successively present to consciousness,

though for a time too short to leave any memory. Sir W. Hamilton thinks

that the separate items may pass, and often do pass, unconsciously;

which opinion Mr Mill also, though not approving his reasons, is

inclined to adopt.

'I am myself inclined (p. 285) to admit unconscious mental

modifications, in the only sense in which I can attach any

very distinct meaning to them--namely, unconscious

modifications of the nerves. It may well be believed that

the apparently suppressed links in a chain of association,

those which Sir W. Hamilton considers as latent, really are

so: that they are not even momentarily felt, the chain of

causation being continued only physically--by one organic

state of the nerves succeeding another so rapidly, that the

state of mental consciousness appropriate to each is not

produced.'

Mr Mill gives various illustrations in support of this doctrine. He at

the same time calls attention to a valuable lecture of Sir W.

Hamilton's, the thirty-second lecture on Metaphysics; especially to the

instructive citation from Cardaillac contained therein, noting the

important fact, which descriptions of the Law of Association often keep

out of sight--that the suggestive agency of Association is carried on,

not by single antecedents raising up single consequents, but by a mass

of antecedents raising up simultaneously a mass of consequents, among

which attention is very unequally distributed.

We shall say little upon Mr Mill's remarks on Sir W. Hamilton's Theory

of Causation--(chap. xvi.). This theory appears to Mr Mill absurd; while

the theory of Mr Mill (continued from Hume, Brown, and James Mill) on

the same subject, appears to Sir W. Hamilton insufficient and

unsatisfactory--'professing to explain the phenomenon of causality, but,

previously to explanation, evacuating the phenomenon of all that

desiderates explanation'--(p. 295). For ourselves we embrace the theory

of Mr Mill:[13] yet we are aware that the remark just cited from Sir W.

Hamilton represents the dissatisfaction entertained towards it by many

objectors. The unscientific and antiscientific yearnings, prevalent

among mankind, lead them to put questions which no sound theory of

Causation will answer; and they are ready to visit and trust any oracle

which professes to deliver a confident affirmative solution of such

questions. Among all the terms employed by metaphysicians, none is used

in a greater variety of meanings than the term Cause.

In Mr Mill's next chapter (xvi.) he comments on Sir W. Hamilton's

doctrine of Concepts or General Notions. There are portions of this

chapter with which we agree less than with most other parts of the

volume; especially with his marked hostility to the term _Concept_, and

the reasons given for it, which reasons appear to us not very consistent

with what he has himself said in the 'System of Logic,' Book IV. chap.

ii. § 1--3. The term _Concept_ has no necessary connection with the

theory called Conceptualism. It is equally available to designate the

idea called up by a general name, as understood either by Mr Bailey or

by James Mill. We think it useful as an equivalent to the German word

_Begriff_, which sense Sir W. Hamilton has in view when he introduces

it, though he does not always adhere to his profession. And when Mr Mill

says (p. 331)--

'I consider it nothing less than a misfortune, that the

words Concept, General Notion, or any other phrase to

express the supposed mental modification corresponding to a

general name, should ever have been invented.'

we dissent from his opinion. To talk of 'the Concept of an individual,'

however, as Mr Mansel does (pp. 338, 339), is improper and inconsistent

with the purpose for which the name is given.

We are more fully in harmony with Mr Mill in his two next chapters

(xviii. et seq.) on Judgment and Reasoning; which are among the best

chapters in this volume. He there combats and overthrows the theory of

Reasoning laid down by Sir W. Hamilton; but we doubt the propriety of

his calling this 'the Conceptualist theory' (pp. 367, 368); since it has

nothing to do with Conceptualism, in the special sense of antithesis to

Realism and Nominalism,--but is, in fact, the theory of the Syllogism as

given in the Analytics of Aristotle, and generally admitted since. Not

merely Conceptualists, but (to use Mr Mill's own language, p. 366)

'nearly all the writers on logic, taught a theory of the science too

small and narrow to contain their own facts.' Such, indeed, was the

theory constantly taught until the publication of Mr Mill's 'System of

Logic;' the first two books of which corrected it, by arguments which

are reinforced and amplified in these two chapters on Judgment and

Reasoning, as well as in the two chapters next following--chaps, xx. and

xxi.--('Is Logic the Science of the Forms of Thought--On the

Fundamental Laws of Thought.') The contrast which is there presented, in

many different ways, between the limited theory of logic taught by Sir

W. Hamilton and Mr Mansel, and the enlarged theory of Mr Mill, is

instructive in a high degree. We consider Mr Mill as the real preserver

of all that is valuable in Formal Logic, from the unfortunate

consequences of an erroneous estimate, brought upon it through the

exaggerated pretensions of logicians. When Sir W. Hamilton contrasts it

pointedly with physical science (of which he talks with a sort of

supercilious condescension, in one of the worst passages of his

writings, p. 401)--when all its apparent fruits were produced in the

shape of ingenious but barren verbal technicalities--what hope could be

entertained that Formal Logic could hold its ground in the estimation of

the recent generation of scientific men? Mr Mill has divested it of that

assumed demonstrative authority which Bacon called 'regere res per

syllogismum;' but he has at the same time given to it a firm root amidst

the generalities of objective science. He has shown that in the great

problem of Evidence or Proof, the Laws of Formal Logic, though bearing

only on one part of the entire procedure, yet bear upon one essential

part, proper to be studied separately: and that the maintenance of

consistency between our affirmations (which is the only special province

of Formal Logic), has great importance and value as a part of the

process necessary for ascertaining and vindicating their truth, or

exposing their character when false or uncertified--but no importance or

value except as a part of that larger exigency.

Review of the Work of Mr John Stuart Mill Entitled, 'Examination of Sir William Hamilton's Philosophy.' · 第 2 / 4 段