The differences alluded to (they are, in order, organization and life,

the objective idea—design, and the subjective idea—thought), it may be

remarked, are admitted by those very Germans to whom protoplasm, name

and thing, is due. They, the most advanced and innovating of them,

directly avow that there is present in the cell “an architectonic

principle that has not yet been detected.” In pronouncing protoplasm

capable of active or vital movements, they do by that refer, they admit

also, to an immaterial force, and they ascribe the processes exhibited

by protoplasm—in so many words—not to the molecules, but to organization

and life. It is remarked by Kant that “the reason of the specific mode

of existence of every part of a living body lies in the whole, whilst

with dead masses each part bears this reason within itself;” and this

indeed is how the two worlds are differentiated. A drop of water, once

formed, is there passive for ever, susceptible to influence, but

indifferent to influence, and what influence reaches it is wholly from

without. It may be added to, it may be subtracted from; but infinitely

apathetic quantitatively, it is qualitatively independent. It is

indifferent to its own physical parts. It is without contractility,

without alimentation, without reproduction, without specific function.

Not so the cell, in which the parts are dependent on the whole, and the

whole on the parts; which has its activity and _raison d’être_ within;

which manifests all the powers which we have described water to want;

and which requires for its continuance conditions of which water is

independent. It is only so far as organization and life are concerned,

however, that the cell is thus different from water. Chemically and

physically, as said, it can show with it quality for quality. How

strangely Mr. Huxley’s deliverances show beside these facts! He can “see

no break in the series of steps in molecular complication;” but,

glaringly obvious, there is a step added that is not molecular at all,

and that has its supporting conditions completely elsewhere. The

molecules are as fully accounted for in protoplasm as in water; but the

sum of qualities, thus exhausted in the latter, is not so exhausted in

the former, in which there are qualities due, plainly, not to the

molecules as molecules, but to the form into which they are thrown, and

the force that makes that form one. When the chemical elements are

brought together, Mr. Huxley says, protoplasm is formed, “and this

protoplasm exhibits the phenomena of life;” but he ought to have added

that these phenomena are themselves added to the phenomena for which all

that relates to chemistry stands, and are there, consequently, only by

reason of some other determinant. New consequents necessarily demand new

antecedents. “We think fit to call different kinds of matter carbon,

oxygen, hydrogen, and nitrogen, and to speak of the various powers and

activities of these substances as the properties of the matter of which

they are composed.” That, doubtless, is true, we say; but such

statements do not exhaust the facts. We call water hydrogen and oxygen,

and attribute _its_ properties to the properties of them. In a chemical

point of view, we ought to do the same thing for ice and steam; yet, for

all the chemical identity, water is not ice, nor is either steam. Do we,

then, in these cases, make nothing of the _difference_, and in its

despite enjoy the satisfaction of viewing the three as one? Not so; we

ask a reason for the difference; we demand an antecedent that shall

render the consequent intelligible. The chemistry of oxygen and hydrogen

is not enough in explanation of the threefold form; and by the very

necessity of the facts we are driven to the addition of heat. It is

precisely so with protoplasm in its twofold form. The chemistry

remaining the same in each (if it really does so), we are compelled to

seek elsewhere a reason for the difference of living from dead

protoplasm. As the differences of ice and steam from water lay not in

the hydrogen and oxygen, but in the heat, so the difference of living

from dead protoplasm lies not in the carbon, the hydrogen, the oxygen,

and the nitrogen, but in the vital organization. In all cases, for the

new quality, plainly, we must have a new explanation. The qualities of a

steam-engine are not the results of its simple chemistry. We do apply to

protoplasm the same conceptions, then, that are legitimate elsewhere,

and in allocating properties and explaining phenomena we simply insist

on Mr. Huxley’s own distinction of “living or dead.” That, in fact, is

to us the distinction of distinctions, and we admit no vital action

whatever, not even the dullest, to be the result of the _molecular_

action of the protoplasm that displays it. The very protoplasm of the

nettle-sting, with which Mr. Huxley begins, is already vitally

organized, and in that organization as much superior to its own

molecules as the steam-engine, in its mechanism, to its own wood and

iron. It were indeed as rational to say that there is no principle

concerned in a steam-engine or a watch but that of its molecular forces,

as to make this assertion of organized matter. Still there are degrees

in organization, and the highest forms of life are widely different from

the lowest. Degrees similar we see even in the inorganic world. The

persistent flow of a river is, to the mighty reason of the solar system,

in some such proportion, perhaps, as the rhizopod to man. In protoplasm,

even the lowest, then, but much more conspicuously in the highest, there

is, in addition to the molecular force, another force unsignalized by

Mr. Huxley—the force of vital organization.

But this force is a rational unity, and that is an idea; and this I

would point to as a second form of the addition to the chemistry and

physics of protoplasm. We have just seen, it is true, that an idea may

be found in inorganic matter, as in the solar and sidereal systems

generally. But the idea in organized matter is not one operative, so to

speak, from without: it is one operative from within, and in an

infinitely more intimate and pervading manner. The units that form the

complement of an inorganic system are but independently and externally

in place, like units in a procession; but in what is organized there is

no individual that is not sublated into the unity of the single life.

This is so even in protoplasm. Mr. Huxley, it is true, desiderates, as

result of mere ordinary chemical process, a life-stuff in mass, as it

were in the web, to which he has only to resort for cuttings and

cuttings in order to produce, by aggregation, what organized individual

he pleases. But the facts are not so: we cannot have protoplasm in the

web, but the piece. There is as yet no _matter_ of life; there are still

_cells_ of life. It is no shred of protoplasm—no spoonful or

toothpickful—that can be recognized as adequate to the function and the

name. Such shred may wriggle a moment, but it produces nought, and it

dies. In the smallest, lowest protoplasm-cell, then, we have this

rational unity of a complement of individuals that only are for the

whole and exist in the whole. This is an idea, therefore; this is

design: the organized concert of many to a single common purpose. The

rudest savage that should, as in Paley’s illustration, find a watch, and

should observe the various contrivances all controlled by the single end

in view, would be obliged to acknowledge—though in his own way—that what

he had before him was no mere physical, no mere molecular product. So in

protoplasm: even from the first, but, quite undeniably, in the completed

organization at last, which alone it was there to produce; for a single

idea has been its one manifestation throughout. And in what machinery

does it not at length issue? Was it molecular powers that invented a

respiration—that perforated the posterior ear to give a balance of

air—that compensated the _fenestra ovalis_ by a _fenestra rotunda_—that

placed in the auricular sacs those _otolithes_, those express stones for

hearing? Such machinery! The _chordæ tendineæ_ are to the valves of the

heart exactly adjusted check-strings; and the contractile _columnæ

carneæ_ are set in, under contraction and expansion, to equalize their

length to their office. Membranes, rods, and liquids—it required the

express experiment of man to make good the fact that the inventor of the

ear had availed himself of the most perfect apparatus possible for his

purpose. And are we to conceive such machinery, such apparatus, such

contrivances merely molecular? Are molecules adequate to such

things—molecules in their blind passivity, and dead, dull insensibility?

Is it to molecular agency Mr. Huxley himself owes that “singular inward

laboratory” of which he speaks, and without which all the protoplasm in

the world would be useless to him? Surely, in the presence of these

manifest ideas, it is impossible to attribute the single peculiar

feature of protoplasm—its vitality, namely—to mere molecular chemistry.

Protoplasm, it is true, breaks up into carbon, hydrogen, oxygen, and

nitrogen, as water does into hydrogen and oxygen; but the watch breaks

similarly up into mere brass, and steel, and glass. The loose materials

of the watch—even its chemical material if you will—replace its weight,

quite as accurately as the constituents carbon, etc., replace the weight

of the protoplasm. But neither these nor those replace the vanished

idea, which was alone the important element. Mr. Huxley saw no break in

the series of steps in molecular complication; but, though not

molecular, it is difficult to understand what more striding, what more

absolute break could be desired than the break into an idea. It is of

that break alone that we think in the watch; and it is of that break

alone that we should think in the protoplasm which, far more cunningly,

far more rationally, constructs a heart, an eye or an ear. That is the

break of breaks, and explain it as we may, we shall never explain it by

molecules.

But, if inorganic elements as such are inadequate to account either for

vital organization or the objective idea of design, much more are they

inadequate, in the third place, to account for the subjective idea, for

the phenomena of thought as thought. Yet Mr. Huxley tells us that

thought is but the expression of the molecular changes of protoplasm.

This he only tells us; this he does not prove. He merely says that, if

we admit the functions of the lowest forms of life to be but “direct

results of the nature of the matter of which they are composed,” we must

admit as much for the functions of the highest. We have not admitted Mr.

Huxley’s presupposition; but, even with its admission, we should not

feel bound to admit his conclusion. In such a mighty system of

differences, there are ample room and verge enough for the introduction

of new motives. We can say here at once, in fact, that as thought, let

its connection be what it may with, has never been proved to result

from, organization, no improvement of the proof required will be found

in protoplasm. No one power that Mr. Huxley signalizes in protoplasm can

account for thought: not alimentation, and not reproduction, certainly;

but not even contractility. We have seen already that there is no proof

of contraction being necessary even for the simplest sensation; but much

less is there any proof of a necessity of contraction for the inner and

independent operations of the mind. Mr. Huxley himself admits this. He

says: “Speech, gesture, and every other form of human action are, in the

long-run, resolvable into muscular contraction;” and so, “even those

manifestations of intellect, of feeling, and of will, which we rightly

name the higher faculties, are not excluded from this classification,

inasmuch as to every one _but the subject of them_, they are known only

as transitory changes in the relative positions of parts of the body.”

The concession is made here, we see that these manifestations are

differently known to the subject of them. But we may first object that,

if even that privileged “every one but the subject” were limited to a

knowledge of contractions, he would not know much. It is only because he

knows, first of all, a thinker and willer of contractions that these

themselves cease to be but passing externalities, and transitory

contingencies. Neither is it reasonable to assert an identity of nature

for contractions, and for that which they only represent. It would

hardly be fair to confound either the receiver or the sender of a

telegraphic message, with the movements which alone bore it, and without

which it would have been impossible. The sign is not the thing

signified, it is but the servant of the signifier—his own arbitrary

mark—and intelligible, in the first place, only to him. It is the

meaning, in all cases, that is alone vital; the sign is but an accident.

To convert the internality into the arbitrary externality that simply

expresses it, is for Mr. Huxley only an oversight. Your ideas are made

known to your neighbors by contractions, therefore your ideas are of the

same nature as contractions! Or, even to take it from the other side,

your neighbor perceives in you contractions only, and therefore your

ideas are contractions! Are not the vital elements here present the two

correspondent internalities, between which the contractions constitute

but an arbitrary chain of external communication, that is so now, but

may be otherwise again? The ringing of the bell at the window is not

precisely the dwarf within. Nor are Engineer Chappe’s “wooden arms and

elbow-joints jerking and fugling in the air,” to be identified with

Engineer Chappe himself. For the higher faculties, even for speech,

etc., assuredly Mr. Huxley might have well spared himself this

superfluous and inapplicable reference to contraction.

But, in the middle of it, as we have seen, Mr. Huxley concedes that

these manifestations are differently known to the subject of them. If

so, what becomes of his assertion of but a certain number of powers for

protoplasm? The manifestations of the higher faculties are not known to

the subject of them by contraction, etc. By what, then, are they known?

According to Mr. Huxley, they can only be known by the powers of

protoplasm; and therefore, by his own showing, protoplasm must possess

powers other than those of his own assertion. Mr. Huxley’s one great

power of contractility, Mr. Huxley himself confesses to be inapplicable

here. Indeed, in his Physiology (p. 193), he makes such an avowal as

this: “We class _sensations_, along with _emotions_, and _volitions_,

and _thoughts_, under the common head of states of _consciousness_; but

what consciousness is we know not, and how it is that anything so

remarkable as a state of consciousness comes about as the result of

irritating nervous tissue, is just as unaccountable as the appearance of

the Djin when Aladdin rubbed his lamp in the story.” Consciousness

plainly was not muscular contraction to Mr. Huxley when he wrote his

Physiology; it is only since then that he has gone over to the assertion

of no power in protoplasm but the triple power, contractility, etc. But

the truth is only as his Physiology has it—the cleft is simply, as Mr.

Huxley acknowledges it there, absolute. On one side, there is the world

of externality, where all is body by body, and away from one another—the

boundless reciprocal exclusion of the infinite object. On the other

side, there is the world of internality, where all is soul to soul, and

away into one another—the boundless reciprocal inclusion of the infinite

subject. This—even while it is true that, for subject to be subject, and

object, object, the boundless intussuscepted multiplicity of the single

invisible point of the one is but the dimensionless casket into which

the illimitable Genius of the other must retract and withdraw itself—is

the difference of differences; and certainly it is not internality that

can be abolished before externality. The proof for the absoluteness of

thought, the subject, the mind, is, on its side, pretty well perfect. It

is not necessary here, however, to enter into that proof at length.

Before passing on, I may simply point to the fact that, if thought is to

be called a function of matter, it must be acknowledged to be a function

wholly peculiar and unlike any other. In all other functions, we are

present to processes which are in the same sense physical as the organs

themselves. So it is with lung, stomach, liver, kidney, where every step

can be followed, so to speak, with eye and hand; but all is changed when

we have to do with mind as the function of brain. Then, indeed, as Mr.

Huxley thought in his Physiology, we are admitted, as if by touch of

Aladdin’s lamp, to a world absolutely different and essentially new—to a

world, on its side of the incommunicable cleft, as complete, entire,

independent, self-contained, and absolutely _sui generis_, as the world

of matter on the other side. It will be sufficient here to allude to as

much as this, with special reference to the fact that, so far as this

argument is concerned, protoplasm has not introduced any the very

slightest difference. All the ancient reasons for the independence of

thought as against organization, can be used with even more striking

effect as against protoplasm; but it will be sufficient to indicate

this, so much are the arguments in question a common property now.

Thought, in fact, brings with it its own warrant; or it brings with it,

to use the phrase of Burns, “its patent of nobility direct from Almighty

God.” And that is the strongest argument on this whole side. Throughout

the entire universe, organic and inorganic, thought is the controlling

sovereign; nor does matter anywhere refuse its allegiance. So it is in

thought, too, that man has _his_ patent of nobility, believes that he is

created in the image of God, and knows himself a free-man of infinitude.

But the analogy, in the hands of Mr. Huxley, has, we have seen, a second

reference—that, namely, to the excitants, if we may call them so, which

_determine_ combination. The _modus operandi_, Mr. Huxley tells us, of

preëxisting protoplasm in determining the formation of new protoplasm,

is not more unintelligible than the _modus operandi_ of the electric

spark in determining the formation of water; and so both, we are left to

infer, are perfectly analogous. The inferential turn here is rather a

favorite with Mr. Huxley. “But objectors of this class,” he says on an

earlier occasion, in allusion to those who hesitate to conclude from

dead to living matter, “do not seem to reflect that it is also, in

strictness, true that we know nothing about the composition of any body

whatever as it is.” In the same neighborhood, too, he argues that,

though impotent to restore to decomposed calc-spar its original form, we

do not hesitate to accept the chemical analysis assigned to it, and

should not, consequently, any more hesitate because of any mere

difference of form to accept the analysis of dead for that of living

protoplasm. It is certainly fair to point out that, if we bear ignorance

and impotence with equanimity in one case, we may equally so bear them

in another; but it is not fair to convert ignorance into knowledge, nor

impotence into power. Yet it is usual to take such statements loosely,

and let them pass. It is not considered that, if we know nothing about

the composition of any body whatever as it is, then we do know nothing,

and that it is strangely idle to offer absolute ignorance as a support

for the most dogmatic knowledge. If such statements are, as is really

expected for them, to be accepted, yet not accepted, they are the

stultification of all logic. Is the chemistry of living to be seen to be

the same as the chemistry of dead protoplasm, because we know nothing

about the composition of any body whatever as it is? We know perfectly

well that black is white, for we are absolutely ignorant of either as it

is! The _form_ of the calc-spar, which (the spar) we _can_ analyze, we

cannot restore; therefore the _form_ of the protoplasm, which we

_cannot_ analyze, has nothing to do with the matter in hand; and the

chemistry of what is dead may be accepted as the chemistry of what is

living! In the case of reasoning so irrelevant it is hardly worth while

referring to what concerns the forms themselves; that they are totally

incommensurable, that in all forms of calc-spar there is no question but

of what is physical, while in protoplasm the change of form is

introduction into an entire new world. As in these illustrations, so in

the case immediately before us. No appeal to ignorance in regard to

something else, the electric spark, should be allowed to transform

another ignorance, that of the action of preëxisting protoplasm, into

knowledge, here into _the_ knowledge that the two unknown things,

because of non-knowledge, are—perfectly analogous! That this analogy

does not exist—that the electric spark and preëxisting protoplasm are,

in their relative places, _not_ on the same chemical level—this is the

main point for us to see; and Mr. Huxley’s allusion to our ignorance

must not be allowed to blind us to it. Here we have in a glass vessel so

much hydrogen and oxygen, into which we discharge an electric spark, and

water is the result. Now what analogy is it possible to perceive between

this production of water by external experiment and the production of

protoplasm by protoplasm? The discrepancy is so palpable that it were

impertinent to enlarge on it. The truth is just this, that the measured

and mixed gases, the vessel, and the spark, in the one case, are as

unlike the fortuitous food, the living organs, and the long process of

assimilation in the other case, as the product water is unlike the

product protoplasm. No; that the action of the electric spark should be

unknown, is no reason why we should not insist on protoplasm for

protoplasm, on life for life. Protoplasm can only be produced by

protoplasm, and each of all the innumerable varieties of protoplasm,

only by its own kind. For the protoplasm of the worm we must go to the

worm, and for that of the toad-stool to the toad-stool. In fact, if all

living beings come from protoplasm, it is quite as certain that, but for

living beings, protoplasm would disappear. Without an egg you cannot

have a hen—that is true; but it is equally true that, without a hen, you

cannot have an egg. So in protoplasm; which, consequently, in the

production of itself, offers no analogy to the production, or

precipitation by the electric spark, not of itself, but of water.

Besides, if for protoplasm, preëxisting protoplasm, is always necessary,

how was there ever a first protoplasm?

Generally, then, Mr. Huxley’s analogy does not hold, whether in the one

reference or the other, and Mr. Huxley has no warrant for the reduction

of protoplasm to the mere chemical level which he assigns it in either.

That level is brought very prominently forward in such expressions as

these: That it is only necessary to bring the chemical elements

“together,” “under certain conditions,” to give rise to the more complex

body, protoplasm, just as there is a similar expedient to give rise to

water; and that, under the influence of preëxisting living protoplasm,

carbonic acid, water, and ammonia disappear, and an equivalent weight of

protoplasm makes its appearance, just as, under the influence of the

electric spark, hydrogen and oxygen disappear, and an equivalent weight

of water makes its appearance. All this, plainly, is to assume for

protoplasm such mere chemical place and nature as consist not with the

facts. The cases are, in truth, not parallel, and the “certain

conditions” are wholly diverse. All that is said we can do at will for

water, but nothing of what is said can we do at will for protoplasm. To

say we can feed protoplasm, and so make protoplasm at will produce

protoplasm, is very much, in the circumstances, only to say, and is not

to say, that, in this way, we make a chemical experiment. To insist on a

chemical analogy, in fact, between water and protoplasm, is to omit the

differences not covered by the analogy at all—thought, design, life, and

all the processes of organization; and it is but simple procedure to

omit these differences only by an appeal to ignorance elsewhere.

It is hardly worth while, perhaps, to refer now again to the

difference—here, however, once more incidentally suggested—between

protoplasm and protoplasm. Mr. Huxley, that is, almost in his very last

word on this part of the argument, seems to become aware of the bearing

of this on what relates to materiality, and he would again stamp

protoplasm (and with it life and intellect), into an indifferent

identity. In order that there should be no break between the lowest

functions and the highest (the functions of the fungus and the functions

of man), he has “endeavored to prove,” he says, that the protoplasm of

the lowest organisms is “essentially identical with, and most readily

converted into that of any animal.” On this alleged reciprocal

_convertibility_ of protoplasm, then, Mr. Huxley would again found as

well an inference of identity, as the further conclusion that the

functions of the highest, not less than those of the lowest animals, are

but the molecular manifestations of their common protoplasm.

Plainly here it is only the consideration, not of function, but of the

alleged reciprocal _convertibility_ that is left us now. Is this true,

then? Is it true that every organism can digest every other organism,

and that thus a relation of identity is established between that which

digests and whatever is digested? These questions place Mr. Huxley’s

general enterprise, perhaps, in the most glaring light yet; for it is

very evident that there is an end of the argument if all foods and all

feeders are essentially identical both with themselves and with each

other. The facts of the case, however, I believe to be too well known to

require a single word here on my part. It is not long since Mr. Huxley

himself pointed out the great difference between the foods of plants and

the foods of animals; and the reader may be safely left to think for

himself of _ruminantia_ and _carnivora_, of soft bills and hard bills,

of molluscs and men. Mr. Huxley talks feelingly of the possibility of

himself feeding the lobster quite as much as of the lobster feeding him;

but such pathos is not always applicable; it is not likely that a sponge

would be to the stomach of Mr. Huxley any more than Mr. Huxley to the

stomach of a sponge.

But a more important point is this, that the functions themselves remain

quite apart from the alleged convertibility. We can neither acquire the

functions of what we eat, nor impart our functions to what eats us. We

shall not come to fly by feeding on vultures, nor they to speak by

feeding on us. No possible manure of human brains will enable a

corn-field to reason. But if functions are inconvertible, the

convertibility of the protoplasm is idle. In this inconvertibility,

indeed, functions will be seen to be independent of mere chemical

composition. And that is the truth: for functions there is more required

than either chemistry or physics.

Half Hours With Modern Scientists: Lectures and Essays · 第 8 / 19 段