We ought to make sure what we object to because it is a peculiarity of

the human mind that it does not require evidence for a statement before

accepting it; it generally accepts any statement which has no evidence

against it. Unless we reject a statement and know why we have done so,

it is liable to insinuate itself in our reasoning, and the longer it

remains the more difficult it is to get rid of it. This is why it is so

important to avoid as many pitfalls as possible at the beginning of a

subject.

The reader may find that even when he reads critically he will accept

a certain statement at the time; and then perhaps much later, say a

month, an objection to that statement will occur to him, or he will see

that it at least ought to be qualified. For an explanation of this we

must go back to an analysis of the thinking process. Every idea which

enters the mind, either from independent thinking or from reading, is

accepted as true if it is in full conformity with our past experience

_as we remember it_. In all thinking or reading, the new idea arouses

associates on its entrance. An hypothesis or principle, for instance,

arouses in our minds past experiences of particular instances. If all

these conform it is accepted. But in ordinary uncritical reading or

thinking, only a few associates are aroused. In critical reading, we

look for as many associates as possible, especially those which do not

conform. It is this purpose kept in mind which helps to recall and

awaken these associates. No matter how critical our attitude, however,

we cannot at any given time recall every relevant associate, though

later a “non-conforming” associate is likely to occur to us by pure

accident.

While you are criticising a book line by line, and after you have

finished reading it, you should note the importance and relevancy

of the arguments accepted and rejected. While an author may make a

statement with which you disagree, its truth or falsehood may not

affect the rest of what he has to say, or it may affect merely a few

corollaries drawn from it. In other cases the truth of his entire

conclusion may depend upon it. Again, an author may incontrovertibly

prove something—which is entirely without bearing on the subject. This

means that you should keep the precise question constantly before your

mind.

Often you will find an author making a statement which really amounts

to nothing more than a mere airing of his prejudices, or at best the

bare statement of a conclusion. If he says, “Socialism is the greatest

menace of our civilization,” and leaves it go at that, not telling how

or why, you should mentally note this as a statement, as a statement

merely; you should not allow it to influence your opinion either way.

Finally, remember that though you may be able to refute every argument

an author brings forward in support of a conclusion, his conclusion may

still be correct. It is possible for a man to be right for the wrong

reasons.

While I believe all the foregoing suggestions are judicious and

necessary, I am willing to admit that their wisdom may reasonably

be doubted. But there is one practice about which there can be no

controversy—that of making sure you thoroughly understand every idea of

an author. While most people will not verbally contradict this advice,

their actual practice may be a continual contradiction of it. They will

be in such haste to finish a book that they will not stop to make sure

they really understand the more difficult or obscure passages. Just

what they hope to gain it is difficult to say. If they think it is

wasting time to try to understand every idea, it is surely a greater

waste of time to read an idea without understanding it. To be sure,

the difficulty of understanding may be the fault of the author. It may

be due to his involved and muddled way of expressing himself. It may

be the vagueness of the idea itself. But if anything this is all the

greater reason why you should attempt to understand it. It is the only

way you can find whether or not the author himself really knew what

he was talking about. To understand thoroughly the thought of another

does not necessarily mean to sympathize with it; it does not mean to

ask how that other came by it. It means merely to substitute as far

as possible concrete mental images for the words he uses, and analyze

those images to discover to what extent they agree with facts.

Better to carry this out, you might follow another practice of immense

value. Whenever you are puzzled as to an author’s meaning, or whenever

you do not care to accept his solution of a problem but are undecided

as to what the solution is, or whenever you want to carry an idea

further than he has, or above all, whenever an original and important

relevant thought is suggested to you, you should take your eyes from

your book—shut it if necessary—and let your thinking flow on; give

it fair play, even if it takes an hour before your vein of suggested

thought exhausts itself. Of course this practice will prevent you from

finishing a book as soon as you otherwise would. And if finishing a

book be your aim, I have nothing to say. But if your end is to attain

true, sound knowledge, knowledge which you will retain; if your object

is to become a thinker, the practice will prove of unspeakable benefit.

It will not interfere with concentration. Remember your object is to

concentrate primarily on the subject, not on the book; you intend to

become a thinker, not an interpreter or a commentator or a disciple of

any author.

And there are two reasons why this thinking should not be put off

until after you have finished a book. The first and more important

is that after you have finished reading, most of the ideas will have

unrecallably dropped out of mind. The second is that when you are

undecided about the solution of a problem, you will often find later

arguments depending upon that solution. Unless its truth or falsity is

decided in your own mind you will not know how to deal with these later

arguments.

I have spoken of feeling that an argument is fallacious, and of being

unable to point out just where it is so. To cease reading for a while,

and to endeavor to make these inarticulate objections articulate,

is excellent practice for training analytic powers and developing

clearness of thought.

Another way of reading a book is what I may call the anticipating

method. Whenever a writer has started to explain something, or

whenever you see that he is about to, stop reading and try to think

out the explanation for yourself. Sometimes such thinking will

anticipate only a paragraph, at other times an entire chapter. School

and college text-books, and in fact formal text-books generally, often

contain lists of questions at the end of the chapters. Where you find

these, read them before you read the chapter, and where possible try

to answer them by your own thinking. This practice will make you

understand an explanation much more easily. If your thinking agrees

with the author’s explanation it will give you self-confidence. It will

make you realize whether or not you understand an explanation. If you

were not able to think the thing out for yourself you will appreciate

the author’s explanation. If your thinking disagrees with that of the

author you will have an opportunity to correct him—or be corrected. In

either case your opinion will rest on firmer grounds. Not least of all

you will be getting practice in self-thinking.

After reading and criticising a book, it is a good practice to study

one taking a different viewpoint, or written even in direct opposition.

You will doubtless find that it points out many fallacies and

controverts many statements in the first book, which you allowed to

pass unchallenged. Ask yourself what the trouble was. Was your attitude

too receptive? Did you swallow words without substituting clear mental

images? Did you fail to trace out the consequences of a statement? All

these questions will help you do better the next time.

Because of your ignorance of the facts, your failure to refute a

conclusion will sometimes not be your fault. But even here, though you

cannot contradict an author’s statement of facts, you can criticise

conclusions drawn from those facts.

Take an instance. In making an inquiry into the causes of fatigue,

Professor Mosso of Turin selected two dogs as nearly alike as possible.

One he kept tied, and the other he exercised until it was thoroughly

tired. He then transfused blood of the tired dog into the veins of the

rested one, and produced in the latter every sign of fatigue. From this

he concluded that fatigue was due to certain poisons in the blood.

Now we cannot contradict the fact of this experiment: that the rested

animal was made to look tired. But we can question the inference

drawn. The truth of the conclusion aside, was the evidence sufficient

to establish it? Might not, for instance, similar results have been

produced upon the rested dog if blood of another rested dog had been

transfused into it? Had Mosso made such an experiment? Other objections

should easily occur to one.

Questions which admit of treatment by studying both sides are

too numerous to mention. The literature of philosophy furnishes

particularly good material. Examples which at present occur to me

are Sir William Hamilton’s philosophy versus Mill’s _Examination

of Sir William Hamilton’s Philosophy_, and Herbert Spencer’s

_First Principles_ versus William James’ essay, _Herbert Spencer’s

Autobiography_ and Henri Bergson’s criticism of Spencer in his

_Creative Evolution_.

Uncritical students of the history of philosophy often find themselves

agreeing with each thinker in turn, no matter how much he contradicts

previous thinkers, and end by acquiescing in the last system they read

about. I remember a philosophy class which completed its studies with

Pragmatism. Of course it was merely a coincidence, but at the end

of the course fully nine-tenths of the students declared themselves

Pragmatists!

It is almost needless to remark that an author who pretends to point

out fallacies in another is not necessarily right. There are men who

pride themselves on “reading both sides of a subject”; but unless they

have been critical, their knowledge is not half as clear or as likely

to be true as that of a man who has read only one side, but who has

read it critically.

* * * * *

We have now to consider the next step outlined in the suggested plan of

reading—“written note should be made of the problems taken up which you

do not believe have been adequately treated, or the solutions of which

are in any way unsatisfactory. These you should think out for yourself.”

When reading a book you will often come across a statement, perhaps

an entire chapter, with which you disagree. This disagreement should

be recorded in the form of a question; as for instance, “Is such

and such the case?” You may doubt whether an author’s explanation

really explains. You may have a vague inarticulate suspicion that he

is sliding over facts, or that his solution is too superficial. This

suspicion should also be recorded in the form of a question. Often

again, while reading, a problem connected with the subject will occur

to you which the author has not even considered. This too should be

recorded.

All these questions should unfailingly be written, either in the margin

or on a piece of paper or notebook kept always at hand. You should

then set aside a definite time for thinking and attempt to solve the

questions for yourself.

And in thinking for yourself you should not make the author’s remarks

the basis of your thinking. You should deal with a problem almost

as if it had never occurred to any one else but you. Simply because

somebody else has been satisfied with a certain solution, that is no

reason why you should be. You should deal directly with the facts, data

and phenomena under consideration; not with the opinions of others

about those facts, data and phenomena. You should not ask yourself

whether the pragmatists are right, or whether the nominalists are

right, or the socialists, or the evolutionists, or the Democrats, or

the Presbyterians, or the hedonists, or what not. You should not ask

yourself which “school” of thinking you ought to belong to. You should

think a problem out _for yourself_, in every way that phrase implies.

At the end you may, incidentally, find yourself agreeing in the main

with some school of thought. However, this will be only accidental, and

your thought will be much more likely to be true. But you should never

agree with a school of thought any more than independent thinking leads

you to.

Of problems dealt with in this manner, some will take ten minutes,

others a week. If you encounter a particularly obstinate problem it

may be best to leave it for a while, say a week or two or even longer,

and go on with other problems. When problems are thus recurrently

treated it may take months, even years, before a satisfactory solution

is reached. In such cases you should be willing to give months and

even years to their solution. If a problem is not important enough to

devote so much time to you may be forced to abandon it; but you should

constantly keep in mind the fact that you have not solved it, and you

should be willing to admit to others that you have not solved it. Never

allow mere intellectual laziness to stifle your doubts and make you

think you have solved a problem, when you know in your heart of hearts

that you have worked yourself into the state of belief merely to save

yourself mental discomfort.

When most of your problems have been solved and your views made

definite you may resume your reading. You may proceed to other books on

the subject.

As to the suggestion that another book on the subject might be dealt

with in the same manner as this first one: this will depend largely on

the individual subject. It will depend on just what books have been

written on that subject. If none completely or adequately covers the

field, or if there are two or more good books representing radically

different viewpoints, more than one book probably ought to be studied

in this comprehensive manner. But this must be left to the reader’s

discretion.

* * * * *

We come now to the last part of our plan—“after that all books may be

read ‘hop, skip and jump’ fashion, for the new problems or solutions

they suggest.”

I have already implied the necessity for this in formulating the law

of diminishing returns. After we have read several books on a subject

it would be manifestly foolish to continue reading books on that same

subject _in toto_. We would merely be going over again knowledge

already in our possession, instead of using our time more profitably

by entering new territory. But any good book will contain _something_

unique; some facts or principles to be found nowhere else; or perhaps

merely an unusually clear way of explaining some old principle, or a

new light on it. This we should endeavor to get without wasting our

time by plowing through the entire volume.

Theoretically our problem is difficult; on its face it would seem

impossible. We are to read all the important parts of a book; that

is, the parts most important _for us_, and nothing but the important

parts. But until we read it how are we to know whether any given part

of a book is important? In practice, however, our difficulty is not so

formidable.

We can eliminate the greater mass of the relatively useless part of a

book by a glance at its table of contents. If we see there titles which

suggest subjects or aspects of subjects in which we are not interested,

or that we feel we already know enough about, or that are simply

outside the particular purpose we have in consulting that book at all,

we can omit those chapters and confine ourselves to the others. . . .

When we were children first learning to read we had to look at every

letter in a word, then spell it out. Finally its meaning dawned upon

us. As we became more proficient we did not have to look at every

letter; we could read words as wholes with the same rapidity as the

separate letters. Accurate psychological tests have determined that a

man can read such words as “and” and “the” with even greater rapidity

than any single letter composing them. We finally reach the point where

we can read short phrases at the same rate as we formerly could single

words.

But the secret of the scholar who can cover efficiently much more

ground than ordinary men is not so much that he reads _faster_, as

that he reads _less_. In other words, instead of reading every word

he glances down a page and sees certain “cue” words or rather “cue”

phrases, for the eye and mind take in phrases as wholes. If he is

familiar with the subject (and he is not to employ this method unless

and until he is) he knows immediately, by “a sort of instinct” as

Buckle called it, whether any new or valuable thought is on that page.

When he finds that there is he involuntarily slackens his pace and

reads that thought at ordinary reading pace or even slower. Sometimes

indeed he will read whole chapters slowly, word for word, if the

contents are sufficiently novel and important to warrant it.

Read by this “hop, skip and jump” fashion a book the size of the

present volume might take an hour or even less. But it is almost

impossible to give even an approximate estimate of the time such

reading ought to take. Of course the longer you spend the more you

will get out of a book, but the return per time invested will be less

and less. On the other hand if you read the book too fast you may be

wasting your time altogether; you may end by understanding nothing at

all. Much will depend upon the originality and depth of the book, upon

the reader’s familiarity with the subject, and upon his native mental

qualities.

Many may object to practicing the foregoing method because they have

a vague feeling that it is their duty to read every word in a book. I

suspect that the real reason for this is simply so that when asked they

can conscientiously say they have _read_ the book. Whereas if they had

followed this skipping method they would be able to say only that they

had “glanced through it” or at best that they had “read parts of it.”

To this objection I have nothing to say, for I am confining my remarks

to those in search of truth and knowledge rather than conversation and

the good opinion of those who believe that reading from cover to cover

is the only path to wisdom. I might point out in passing, however, that

if we do follow this method there will be a half dozen books which we

can say we have “glanced through” to one which we would otherwise have

been able to say we had “read.”

This way of dealing with a book is constructive and positive as opposed

to the negative method of critical reading. For we read for suggestion

only; we carry forward some line of thought of an author, which is

better for intellectual development than trying to find if he was

wrong and where he was wrong. Not only is this positive method more

interesting; in some respects it is better even for criticism. For in

carrying forward an author’s line of thought, noting its consequences

and implications and considering different cases where it applies, we

find whether or not it leads to absurd conclusions; whether or not all

concrete instances conform with it. It should be kept in mind that this

method is not to be followed until the main text-book has been studied.

Consequently when it is followed your mind will have been fortified by

previous reading and thinking; valuable thoughts of an author will tend

to impress you and be remembered, while his trite or erroneous ideas

will tend to be ignored.

But after all, what is important is not your attitude or method at

the time of reading a book, but the thinking done later. The critical

attitude has its shortcomings, for when we are on the lookout for an

author’s mistakes we often miss the full significance of his truths.

On the other hand when “reading for suggestion” we may too often allow

an error to pass unquestioned. But both these disadvantages may be

overcome if we do enough thinking afterward.

Only one thing I must insist on: make sure you understand every

sentence of a book. Do not “guess” you understand it. Do not slide

over it in the hope that the author will explain it later. Do not work

yourself into the belief that after all it is not really important.

Rather than this, better by far do not read the book at all. Not only

will you get little or nothing from it but you will be forming the

worst of intellectual habits—that of thinking you understand when

you do not. If you have made every reasonable effort to understand

an author and then have not succeeded, write in the margin “I do not

understand this,” or draw a line alongside the sentence or passage. If

you have to do this too often you should put the volume aside for a

time. It is either too advanced for you or it is not worth reading.

As to the thinking you do after reading. Often problems connected with

the subject of a book you have read may arise spontaneously in mind,

or an objection to a statement may suddenly occur to you when thinking

on some other topic. Of course when this happens you should not stifle

your thoughts. But besides this, definite periods should be put aside

for thinking on what you have read and on the problems you have

written. I cannot insist on this too strenuously or too often.

A good task to set before yourself is to take every idea you agree with

in a book and try to treat it as a “germ.” Tell yourself that you will

develop it beyond the point where the author left off. Of course this

will not always be possible. You will seldom succeed. But there is

nothing like hitching your wagon to a star, and it will do no harm to

set this up as an ideal.

* * * * *

A few miscellaneous problems remain to be considered.

How should we deal with authors with whom we disagree fundamentally?

Herbert Spencer relates that he twice started Kant’s _Critique of

Pure Reason_, but disagreeing fundamentally with the first and main

proposition he ceased reading. Now to do this is to give an author too

much credit for consistency. For even if every other proposition he

sets forth is ostensibly a corollary from his leading one, some of them

will contain much truth. It is impossible to be consistently wrong.

Add to this the possibility that the author may be right on his first

proposition after all. However, no book with a viewpoint radically

different from our own should be used as a main text, for we would

get little benefit from it. If the book is by an obscure author we

may safely lay it aside altogether. But if it is by so famous and so

bepraised a philosopher as Kant we should at least glance through the

entire volume for suggestions.

How many times ought we to read a book? I have already partly answered

this in formulating the law of diminishing returns. Few books are worth

re-reading. Rather than read one book twice on any given subject it

will most often be more profitable to read another book on it. For the

second will not only serve as a review of previous knowledge, but will

furnish you with new ideas, different aspects and new problems.

Certain books, however, can never be replaced by others. They occupy

this position either because they deal with a subject not elsewhere

dealt with or because they take an entirely novel aspect, or solely

because they are the works of supreme genius, for while the main

conclusions reached in works of this last type may be found elsewhere,

the _manner of thinking_ can never be. These books should be read

twice. The main text-book selected on any subject will usually be

chosen because it is the best and most comprehensive work on that

subject. For this reason it should be read a second time even if such

reading is only of the hop, skip and jump variety.

Thinking as a Science · 第 7 / 11 段