CHAPTER I

Produced by Don Kostuch

[Transcriber's Notes]

This text is derived from a copy in the Ave Maria University

library, catalog number "B 171 .S8"

[End Transcriber's Notes]

A CRITICAL HISTORY OF GREEK PHILOSOPHY

MACMILLAN AND CO., LIMITED

LONDON - BOMBAY - CALCUTTA - MADRAS

MELBOURNE

THE MACMILLAN COMPANY

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A CRITICAL HISTORY OF GREEK PHILOSOPHY

BY

W. T. STACE

MACMILLAN AND CO., LIMITED

ST. MARTIN'S STREET, LONDON

1920

COPYRIGHT

GLASGOW: PRINTED AT THE UNIVERSITY PRESS

BY ROBERT MACLEHOSE AND CO. LTD.

{v}

PREFACE

This book contains the substance, and for the most part the words, of

a course of public lectures delivered during the first three months of

1919. The original division into lectures has been dropped, the matter

being more conveniently redivided into chapters.

The audience to whom the lectures were delivered was composed of

members of the general public, and not only of students. For the most

part they possessed no previous knowledge of philosophy. Hence this

book, like the original lectures, assumes no previous special

knowledge, though it assumes, of course, a state of general education

in the reader. Technical philosophical terms are carefully explained

when first introduced; and a special effort has been made to put

philosophical ideas in the clearest way possible. But it must be

remembered that many of the profoundest as well as the most difficult

of human conceptions are to be found in Greek philosophy. Such ideas

are difficult in themselves, however clearly expressed. No amount of

explanation can ever render them anything but difficult to the

unsophisticated mind, and anything in the nature of "philosophy made

easy" is only to be expected from quacks and charlatans.

Greek philosophy is not, even now, antiquated. It is not from the

point of view of an antiquary or historian {vi} that its treasures are

valuable. We are dealing here with living things, and not with mere

dead things--not with the dry bones and debris of a bygone age. And I

have tried to lecture and write for living people, and not for mere

fossil-grubbers. If I did not believe that there is to be found here,

in Greek philosophy, at least a measure of the truth, the truth that

does not grow old, I would not waste five minutes of my life upon it.

"We do not," says a popular modern writer, [Footnote 1] "bring the

young mind up against the few broad elemental questions that are the

_questions of metaphysics_ .... We do not make it discuss, correct it,

elucidate it. That was the way of the Greeks, and we worship that

divine people far too much to adopt their way. No, we lecture to our

young people about not philosophy but philosophers, we put them

through book after book, telling how other people have discussed these

questions. We avoid the questions of metaphysics, but we deliver

semi-digested half views of the discussions of, and answers to these

questions made by men of all sorts and qualities, in various remote

languages and under conditions quite different from our own. . . . It

is as if we began teaching arithmetic by long lectures upon the origin

of the Roman numerals, and then went on to the lives and motives of

the Arab mathematicians in Spain, or started with Roger Bacon in

chemistry, or Sir Richard Owen in comparative anatomy .... It is time

the educational powers began to realise that the questions of

metaphysics, the elements of philosophy, are, here and now to be done

afresh in each mind .... What is wanted is philosophy, and not a

shallow smattering of the history of philosophy ... {vii} The proper

way to discuss metaphysics, like the proper way to discuss mathematics

or chemistry, is to discuss the accumulated and digested product of

human thought in such matters."

[Footnote 1: H. G. Wells in "First and Last Things."]

Plausible words these, certain to seem conclusive to the mob,

notwithstanding that for one element of truth they contain nine of

untruth! The elements of truth are that our educational system

unwarrantably leaves unused the powerful weapon of oral discussion--so

forcibly wielded by the Greeks--and develops book knowledge at the

expense of original thought. Though even here it must be remembered,

as regards the Greeks, (1) that if they studied the history of

philosophy but little, it was because there was then but little

history of philosophy to study, and (2) that if anyone imagines that

the great Greek thinkers did not fully master the thought of their

predecessors before constructing their own systems, he is grievously

mistaken, and (3) that in some cases the over-reliance on oral

discussion--the opposite fault to ours--led to intellectual

dishonesty, quibbling, ostentation, disregard of truth, shallowness,

and absence of all principle; this was the case with the Sophists.

As to the comparisons between arithmetic and philosophy, chemistry and

philosophy, etc., they rest wholly upon a false parallel, and involve

a total failure to comprehend the nature of philosophic truth, and its

fundamental difference from arithmetical, chemical, or physical truth.

If Eratosthenes thought the circumference of the earth to be so much,

whereas it has now been discovered to be so much, then the later

correct view simply cancels and renders nugatory the older view.

{viii} The one is correct, the other incorrect. We can ignore and

forget the incorrect view altogether. But the development of

philosophy proceeds on quite other principles. Philosophical truth is

no sum in arithmetic to be totted up so that the answer is thus

formally and finally correct or incorrect. Rather, the philosophical

truth unfolds itself, factor by factor, in time, in the successive

systems of philosophy, and it is only in the complete series that the

complete truth is to be found. The system of Aristotle does not simply

cancel and refute that of Plato. Spinoza does not simply abolish

Descartes. Aristotle completes Plato, as his necessary complement.

Spinoza does the same for Descartes. And so it is always. The

calculation of Eratosthenes is simply wrong, and so we can afford to

forget it. But the systems of Plato, Aristotle, Spinoza, Leibniz,

etc., are all alike factors of the truth. They are as true now as they

were in their own times, though they are not, and never were, the

whole truth. And therefore it is that they are not simply wrong, done

with, finished, ended, and that we cannot afford to forget them.

Whether it is not possible to bring the many lights to a single focus,

to weld the various factors of the truth into a single organic whole

or system, which should thus be the total result to date, is another

question. Only one such attempt has ever been made, but no one will

pretend that it is possible to understand it without a thorough

knowledge of all previous systems, a knowledge, in fact, of the

separate factors of the truth before they are thus combined into a

total result. Besides, that attempt, too, is now part of the history

of philosophy!

Hence any philosophical thinking which is not founded {ix} upon a

thorough study of the systems of the past will necessarily be shallow

and worthless. And the notions that we can dispense with this study,

and do everything out of our own heads, that everyone is to be his own

philosopher, and is competent to construct his own system in his own

way--such ideas are utterly empty and hollow. Of these truths, indeed,

we see a notable example in what the writer just quoted styles his

"metaphysic." This so-called metaphysic is wholly based upon the

assumption that knowledge and its object exist, each on its own

account, external to one another, the one here, the other there over

against it, and that knowledge is an "instrument" which in this

external manner takes hold of its object and makes it its own. The

very moment the word "instrument" is used here, all the rest,

including the invalidity of knowledge, follows as a matter of course.

Such assumption then--that knowledge is an "instrument"--our writer

makes, wholly uncritically, and without a shadow of right. He gives no

sign that it has ever even occurred to him that this is an assumption,

that it needs any enquiry, or that it is possible for anyone to think

otherwise. Yet anyone who will take the trouble, not merely

superficially to dip into the history of philosophy, but thoroughly to

submit himself to its discipline, will at least learn that this is an

assumption, a very doubtful assumption, too, which no one now has the

right to foist upon the public without discussion as if it were an

axiomatic truth. He might even learn that it is a false assumption.

And he will note, as an ominous sign, that the subjectivism which

permeates and directs the whole course of Mr. Wells's thinking is

identical in character with that {x} subjectivism which was the

essential feature of the decay and _downfall_ of the Greek philosophic

spirit, and was the cause of its final _ruin_ and _dissolution_.

I would counsel the young, therefore, to pay no attention to plausible

and shallow words such as those quoted, but, before forming their own

philosophic opinions, most thoroughly and earnestly to study and

master the history of past philosophies, first the Greek and then the

modern. That this cannot be done merely by reading a modern resume of

that history, but only by studying the great thinkers in their own

works, is true. But philosophical education must begin, and the

function of such books as this, is, not to complete it, but to begin

it; and to obtain first of all a general view of what must afterwards

be studied in detail is no bad way of beginning. Moreover, the study

of the development and historical connexions of the various

philosophies, which is not found in the original writings themselves,

will always provide a work for histories of philosophy to do.

Two omissions in this book require, perhaps, a word of explanation.

Firstly, in dealing with Plato's politics I have relied on the

"Republic," and said nothing of the "Laws." This would not be

permissible in a history of political theories, nor even in a history

of philosophy which laid any special emphasis on politics. But, from

my point of view, politics lie on the extreme outer margin of

philosophy, so that a more slender treatment of the subject is

permissible. Moreover, the "Republic," whether written early or late,

expresses, in my opinion, the views of Plato, and not those of

Socrates, and it still remains the outstanding, typical, and

characteristic {xi} expression of the Platonic political ideal,

however much that ideal had afterwards to be modified by practical

considerations.

Secondly, I have not even mentioned the view, now held by some, that

the theory of Ideas is really the work of Socrates, and not of Plato,

and that Plato's own philosophy consisted in some sort of esoteric

number-theory, combined with theistic and other doctrines. I can only

say that this theory, as expounded for example by Professor Burnet,

does not commend itself to me, that, in fact, I do not believe it, but

that, it being impossible to discuss it adequately in a book of this

kind, I have thought that, rather than discuss it inadequately, it

were better to leave it alone altogether. Moreover, it stands on a

totally different footing from, say, Professor Burnet's interpretation

of Parmenides, which I have discussed. That concerned the

interpretation of the true meaning of a philosophy. This merely

concerns the question who was the author of a philosophy. That was a

question of principle, this merely of personalities. That was of

importance to the philosopher, this merely to the historian and

antiquary. It is like the Bacon-Shakespeare question, which no lover

of drama, as such, need concern himself with at all. No doubt the

Plato-Socrates question is of interest to antiquarians, but after all,

fundamentally, it does not matter who is to have the credit of the

theory of Ideas, the only essential thing for us being to understand

that theory, and rightly to apprehend its value as a factor of the

truth. This book is primarily concerned with philosophical ideas,

their truth, meaning, and significance, and not with the rights and

wrongs of antiquarian disputes. It does indeed purport to {xii} be a

_history_, as well as a discussion of philosophic conceptions. But

this only means that it takes up philosophical ideas in their

historical sequence and connexions, and it does this only because the

conceptions of evolution in philosophy, of the onward march of thought

to a determined goal; of its gradual and steady rise to the supreme

heights of idealism, its subsequent decline, and ultimate collapse,

are not only profoundly impressive as historical phenomena, but are of

vital importance to a true conception of philosophy itself. Were it

not for this, Mr. Wells would, I think, be right, and I for one should

abandon treatment in historical order altogether. Lastly, I may remark

that the description of this book as a _critical_ history means that it

is, or attempts to be critical, not of dates, texts, readings, and the

like, but of philosophical conceptions.

I owe a debt of thanks to Mr. F. L. Woodward, M.A., late principal of

Mahinda College, Galle, Ceylon, for assisting me in the compilation of

the index of names, and in sundry other matters.

W.T.S.

_January_, 1920.

{xiii}

CONTENTS

CHAPTER PAGE

I. THE IDEA OF PHILOSOPHY IN GENERAL. THE

ORIGIN AND DEVELOPMENT OF GREEK PHILOSOPHY 1

II. THE IONICS. THALES. ANAXIMANDER.

ANAXIMENES. OTHER IONIC THINKERS 20

III. THE PYTHAGOREANS 31

IV. THE ELEATICS. XENOPHANES. PARMENIDES.

ZENO. CRITICAL REMARKS ON ELEATICISM 40

V. HERACLEITUS 72

VI. EMPEDOCLES 81

VII. THE ATOMISTS 86

VIII. ANAXAGORAS 94

IX. THE SOPHISTS 106

X. SOCRATES 127

XI. THE SEMI-SOCRATICS. THE CYNICS. THE

CYRENAICS. THE MEGARICS 155

XII. PLATO 164

(i.) Life and writings 165

(ii.) The theory of knowledge 177

(iii.) Dialectic, or the theory of Ideas 183

(iv.) Physics, or the theory of existence 207

(a) The doctrine of the world 207

(b) The doctrine of the human soul 211

{xiv}

(v.) Ethics 217

(a) Of the individual 217

(b) The State 225

(vi.) Views upon art 229

(vii.) Critical estimate of Plato's philosophy 234

XIII. ARISTOTLE:

(i.) Life, Writings, and general character of

his work 249

(ii.) Logic 260

(iii.) Metaphysics 261

(iv.) Physics, or the philosophy of nature 288

(v.) Ethics:

(a) The individual 314

(b) The State 320

(vi.) Aesthetics, or the theory of art 325

(vii.) Critical estimate of

Aristotle's philosophy 331

XIV. THE GENERAL CHARACTER OF POST-ARISTOTELIAN

PHILOSOPHY 339

XV. THE STOICS. LOGIC. PHYSICS. ETHICS 344

XVI. THE EPICUREANS. PHYSICS. ETHICS 354

XVII. THE SCEPTICS. PYRRHO. THE NEW ACADEMY.

LATER SCEPTICISM 361

XVIII. TRANSITION TO NEO-PLATONISM 368

XIX. THE NEO-PLATONISTS 372

INDEX OF SUBJECTS 378

INDEX OF NAMES 382

{1}

A CRITICAL HISTORY OF GREEK PHILOSOPHY

CHAPTER I

THE IDEA OF PHILOSOPHY IN GENERAL.

THE ORIGINS AND DEVELOPMENT OF GREEK PHILOSOPHY

It is natural that, at the commencement of any study, one should be

expected to say what the subject-matter of that study is. Botany is

the knowledge of plants, astronomy of the heavenly bodies, geology of

the rocks of the earth's crust. What, then, is the special sphere of

philosophy? What is philosophy about? Now it is not as easy to give a

concise definition of philosophy, as it is of the other sciences. In

the first place, the content of philosophy has differed considerably

in different periods of history. In general the tendency has been to

narrow down the scope of the subject as knowledge advanced, to exclude

from philosophy what was formerly included in it. Thus in the time of

Plato, physics and astronomy were included as parts of philosophy,

whereas now they constitute separate sciences. This, however, is not

an insurmountable difficulty. What chiefly militates against the

effort to frame a definition is that the precise content of philosophy

is differently viewed by different schools of thought. Thus a

definition of {2} philosophy which a follower of Herbert Spencer might

frame would be unacceptable to an Hegelian, and the Hegelian

definition would be rejected by the Spencerian. If we were to include

in our definition some such phrase as "the knowledge of the Absolute,"

while this might suit some philosophers, others would deny that there

is any Absolute at all. Another school would say that there may be an

Absolute, but that it is unknowable, so that philosophy cannot be the

knowledge of it. Yet another school would tell us that, whether there

is or is not an Absolute, whether it is or is not knowable, the

knowledge of it is in any case useless, and ought not to be sought.

Hence no definition of philosophy can be appreciated without some

knowledge of the special tenets of the various schools. In a word, the

proper place to give a definition is not at the beginning of the study

of philosophy, but at the end of it. Then, with all views before us,

we might be able to decide the question.

I shall make no attempt, therefore, to place before you a precise

definition. But perhaps the same purpose will be served, if I pick out

some of the leading traits of philosophy, which serve to distinguish

it from other branches of knowledge, and illustrate them by

enumerating--but without any attempt at completeness--some of the

chief problems which philosophers have usually attempted to solve. And

firstly, philosophy is distinguished from other branches of knowledge

by the fact that, whereas these each take some particular portion of

the universe for their study, philosophy does not specialize in this

way, but deals with the universe as a whole. The universe is one, and

ideal knowledge of it would be one; but the principles of

specialization and division of {3} labour apply here as elsewhere, and

so astronomy takes for its subject that portion of the universe which

we call the heavenly bodies, botany specializes in plant life,

psychology in the facts of the mind, and so on. But philosophy does

not deal with this or that particular sphere of being, but with being

as such. It seeks to see the universe as a single co-ordinated system

of things. It might be described as the science of things in general.

The world in its most universal aspects is its subject. All sciences

tend to generalize, to reduce multitudes of particular facts to single

general laws. Philosophy carries this process to its highest limit. It

generalizes to the utmost. It seeks to view the entire universe in the

light of the fewest possible general principles, in the light, if

possible, of a single ultimate principle.

It is a consequence of this that the special sciences take their

subject matter, and much of their contents, for granted, whereas

philosophy seeks to trace everything back to its ultimate grounds. It

may be thought that this description of the sciences is incorrect. Is

not the essential maxim of modern science to assume nothing, to take

nothing for granted, to assert nothing without demonstration, to prove

all? This is no doubt true within certain limits, but beyond those

limits it does not hold good. All the sciences take quite for granted

certain principles and facts which are, for them, ultimate. To

investigate these is the portion of the philosopher, and philosophy

thus takes up the thread of knowledge where the sciences drop it. It

begins where they end. It investigates what they take as a matter of

course.

Let us consider some examples of this. The science of geometry deals

with the laws of space. But it takes {4} space just as it finds it in

common experience. It takes space for granted. No geometrician asks

what space is. This, then, will be a problem for philosophy. Moreover,

geometry is founded upon certain fundamental propositions which, it

asserts, being self-evident, require no investigation. These are

called "axioms." That two straight lines cannot enclose a space, and

that equals being added to equals the results are equal, are common

examples. Into the ground of these axioms the geometrician does not

enquire. That is the business of philosophy. Not that philosophers

affect to doubt the truth of these axioms. But surely it is a very

strange thing, and a fact quite worthy of study, that there are some

statements of which we feel that we must give the most laborious

proofs, and others in the case of which we feel no such necessity. How

is it that some propositions can be self-evident and others must be

proved? What is the ground of this distinction? And when one comes to

think of it, it is a very extraordinary property of mind that it

should be able to make the most universal and unconditional statements

about things, without a jot of evidence or proof. When we say that two

straight lines cannot enclose a space, we do not mean merely that this

has been found true in regard to all the particular pairs of straight

lines with which we have tried the experiment. We mean that it never

can be and never has been otherwise. We mean that a million million

years ago two straight lines did not enclose a space, and that it will

be the same a million million years hence, and that it is just as true

on those stars, if there are any, which are invisible even to the

greatest telescopes. But we have no experience of what will {5} happen

a million million years hence, or of what can take place among those

remote stars. And yet we assert, with absolute confidence, that our

axiom is and must be equally true everywhere and at all times.

Moreover, we do not found this on probabilities gathered from

experience. Nobody would make experiments or use telescopes to prove

such axioms. How is it that they are thus self-evident, that the mind

can make these definite and far-reaching assertions without any

evidence at all? Geometricians do not consider these questions. They

take the facts for granted. To solve these problems is for philosophy.

Again, the physical sciences take the existence of matter for granted.

But philosophy asks what matter is. At first sight it might appear

that this question is one for the physicist and not the philosopher.

For the problem of "the constitution of matter" is a well-known

physical problem. But a little consideration will show that this is

quite a different question from the one the philosopher propounds. For

even if it be shown that all matter is ether, or electricity, or

vortex-atoms, or other such, this does not help us in our special

problem. For these theories, even if proved, only teach us that the

different kinds of matter are forms of some one physical existence.

But what we want to know is what physical existence itself is. To

prove that one kind of matter is really another kind of matter does

not tell us what is the essential nature of matter. That, therefore,

is a problem, not of science, but of philosophy.

In the same way, all the sciences take the existence of the universe

for granted. But philosophy seeks to know why it is that there is a

universe at all. Is it {6} true, for example, that there is some

single ultimate reality which produces all things? And if so, what

sort of a reality is it? Is it matter, or mind, or something different

from both? Is it good or evil? And if it is good, how is it that there

is evil in the world?

Moreover every science, except the purely mathematical sciences,

assumes the truth of the law of causation. Every student of logic

knows that this is the ultimate canon of the sciences, the foundation

of them all. If we did not believe in the truth of the law of

causation, namely, that everything which has a beginning has a cause,

and that in the same circumstances the same things invariably happen,

all the sciences would at once crumble to dust. In every scientific

investigation, this truth is assumed. If we ask the zoologist how he

knows that all camels are herbivorous, he will no doubt point in the

first instance to experience. The habits of many thousands of camels

have been observed. But this only proves that those particular camels

are herbivorous. How about the millions that have never been observed

at all? He can only appeal to the law of causation. The camel's

structure is such that it cannot digest meat. It is a case of cause

and effect. How do we know that water always freezes at 0 deg. centigrade

(neglecting questions of pressure, etc.)? How do we know that this is

true at those regions of the earth where no one has ever been to see?

Only because we believe that in the same circumstances the same thing

always happens, that like causes always produce like effects. But how

do we know the truth of this law of causation itself? Science does not

consider the question. It traces its assertions back to this law, but

goes no {7} further. Its fundamental canon it takes for granted. The

grounds of causation, why it is true, and how we know it is true, are,

therefore, philosophical questions.

One may be tempted to enquire whether many of these questions,

especially those connected with the ultimate reality, do not transcend

human faculties altogether, and whether we had not better confine our

enquiries to matters that are not "too high for us." One may question

whether it is possible for finite minds to comprehend the infinite.

Now it is very right that such questions should be asked, and it is

essential that a correct answer should be found. But, for the present,

there is nothing to say about the matter, except that these questions

themselves constitute one of the most important problems of

philosophy, though it is one which, as a matter of fact, has scarcely

been considered in full until modern times. The Greeks did not raise

the question. [Footnote 2] And as this is itself one of the problems

of philosophy, it will be well to start with an open mind. The

question cannot be decided offhand, but must be thoroughly

investigated. That the finite mind of man cannot understand the

infinite is one of those popular dogmatic assertions, which are

bruited about from mouth to mouth, as if they were self-evident, and

so come to tyrannize over men's minds. But for the most part those who

make this statement have never thoroughly sifted the grounds of it,

but simply take it as something universally admitted, and trouble no

further about it. But at the very least we should first know exactly

what {8} we mean by such terms as "mind," "finite," and "infinite."

And we shall not find that our difficulties end even there.

[Footnote 2: The reasoning of the Sceptics and others no doubt

involved this question. But they did not consider it in its peculiar

modern form.]

Philosophy, then, deals with the universe as a whole; and it seeks to

take nothing for granted. A third characteristic may be noted as

especially important, though here no doubt we are trenching upon

matters upon which there is no such universal agreement. Philosophy is

essentially an attempt to rise from sensuous to pure, that is,

non-senuous, thought. This requires some explanation.

We are conscious, so to speak, of two different worlds, the external

physical world and the internal mental world. If we look outwards we

are aware of the former, if we turn our gaze inwards upon our own

minds we become aware of the latter. It may appear incorrect to say

that the external world is purely physical, for it includes other

minds. I am aware of your mind, and this is, to me, part of the world

which is external to me. But I am not now speaking of what we know by

inference, but only of what we directly perceive. I cannot directly

perceive your mind, but only your physical body. In the last resort it

will be found that I am aware of the existence of your mind only by

inference from perceived physical facts, such as the movements of your

body and the sounds that issue from your lips. The only mind which I

can immediately perceive is my own. There is then a physical world

external to us, and an internal mental world.

Which of these will naturally be regarded as the most real? Men will

regard as the most real that which is the most familiar, that which

they came first into {9} contact with, and have most experience of.

And this is unquestionably the external material world. When a child

is born, it turns its eyes to the light, which is an external physical

thing. Gradually it gets to know different objects in the room. It

comes to know its mother, but its mother is, in the first instance, a

physical object, a body. It is only long afterwards that its mother

becomes for the child a mind or a soul. In general, all our earliest

experiences are of the material world. We come to know of the mental

world only by introspection, and the habit of introspection comes in

youth or manhood only, and to many people it hardly comes at all. In

all those early impressionable years, therefore, when our most durable

ideas of the universe are formed, we are concerned almost exclusively

with the material world. The mental world with which we are much less

familiar consequently tends to appear to all of us something

comparatively unreal, a world of shadows. The bent of our minds

becomes materialistic.

What I have said of the individual is equally true of the race.

Primitive man does not brood over the facts of his own mind. Necessity

compels him to devote most of his life to the acquisition of food, and

to warding off the dangers which continually threaten him from other

physical objects. And even among ourselves, the majority of men have

to spend most of their time upon considering various aspects of things

external to them. By the individual training of each man, and by long

hereditary habit, then, it comes about that men tend to regard the

physical world as more real than the mental.

{10}

Abundant evidences of this are to be found in the structure of human

language. We seek to explain what is strange by means of what is

well-known. We try to express the unfamiliar in terms of the familiar.

We shall find that language always seeks to express the mental by the

analogy of the physical. We speak of a man as a "clear" thinker.

"Clear" is an attribute of physical objects. Water is clear if it has

no extraneous matter in it. We say that a man's ideas are "luminous,"

thus taking a metaphor from physical light. We talk of having an idea

"at the back of the mind." "At the back of"? Has the mind got a front

and a back? We are thinking of it as if it were a physical thing in

space. We speak of mental habits of "attention." "Attention" means

stretching or turning the mind in a special direction. We "reflect."

"Reflection" means bending our thoughts back upon themselves. But,

literally speaking, only physical objects can be stretched, turned,

and bent. Whenever we wish to express something mental we do it by a

physical analogy. We talk of it in terms of physical things. This

shows how deep-rooted our materialism is. If the mental world were

more familiar and real to us than the material, language would have

been constructed on the opposite principle. The earliest words of

language would have expressed mental facts, and we should afterwards

have tried to express physical things by means of mental analogies.

In the East one commonly hears Oriental idealism contrasted with

Western materialism. Such phrases may possess a certain relative

truth. But if they mean that there is in the East, or anywhere else in

the world, {11} a race of men who are naturally idealists, they are

nonsense. Materialism is ingrained in all men. We, Easterns or

Westerns, are born materialists. Hence when we try to think of objects

which are commonly regarded as non-material, such as God or the soul,

it requires continual effort, a tremendous struggle, to avoid

picturing them as material things. It goes utterly against the grain.

Perhaps hundreds of thousands of years of hereditary materialism are

against us. The popular idea of ghosts will illustrate this. Those who

believe in ghosts, I suppose, regard them as some sort of disembodied

souls. The pictures of ghosts in magazines show them as if composed of

matter, but matter of some _thin_ kind, such as vapour. Certain Indian

systems of thought, which are by way of regarding themselves as

idealistic, nevertheless teach that thought or mind is an extremely

subtle kind of matter, far subtler than any ever dealt with by the

physicist and chemist. This is very interesting, because it shows that

the authors of such ideas feel vaguely that it is wrong to think of

thought as if it were matter, but being unable to think of it in any

other way, owing to man's ingrained materialism, they seek to palliate

their sin by making it thin matter. Of course this is just as absurd

as the excuse made by the mother of an illegitimate child, that it was

a very small one. This thin matter is just as material as lead or

brass. And such systems are purely materialistic. But they illustrate

the extraordinary difficulty that the ordinary mind experiences in

attempting to rise from sensuous to non-sensuous thinking. They

illustrate the ingrained materialism of man.

This natural human materialism is also the cause {12} of mysticism and

symbolism. A symbolic thought necessarily contains two terms, the

symbol and the reality which it symbolizes. The symbol is always a

sensuous or material object, or the mental image of such an object,

and the reality is always something non-sensuous. Because the human

mind finds it such an incredible struggle to think non-sensuously, it

seeks to help itself by symbols. It takes a material thing and makes

it stand for the non-material thing which it is too weak to grasp.

Thus we talk of God as the "light of lights." No doubt this is a very

natural expression of the religious consciousness, and it has its

meaning. But it is not the naked truth. Light is a physical existence,

and God is no more light than he is heat or electricity. People talk

of symbolism as if it were a very high and exalted thing. They say,

"What a wonderful piece of symbolism!" But, in truth symbolism is the

mark of an infirm mind. It is the measure of our weakness and not of

our strength. Its root is in materialism, and it is produced and

propagated by those who are unable to rise above a materialistic

level.

Now philosophy is essentially the attempt to get beyond this sort of

symbolic and mystical thinking, to get at the naked truth, to grasp

what lies behind the symbol as it is in itself. These inferior modes

of thought are a help to those who are themselves below their level,

but are a hindrance to those who seek to reach the highest level of

truth.

It is often said that philosophy is a very difficult and abstruse

subject. Its difficulty lies almost wholly in the struggle to think

non-sensuously. Whenever we {13} come to anything in philosophy that

seems beyond us, we shall generally find that the root of the trouble

is that we are trying to think non-sensuous objects in a sensuous way,

that is, we are trying to form mental pictures and images of them, for

all mental pictures are composed of sensuous materials, and hence no

such picture is adequate for a pure thought. It is impossible to

exaggerate this difficulty. Even the greatest philosophers have

succumbed to it. We shall constantly have to point out that when a

great thinker, such as Parmenides or Plato, fails, and begins to

flounder in difficulties, the reason usually is that, though for a

time he has attained to pure thought, he has sunk back exhausted into

sensuous thinking, and has attempted to form mental pictures of what

is beyond the power of any such picture to represent, and so has

fallen into contradictions. We must keep this constantly in mind in

the study of philosophy.

In modern times philosophy is variously divided, as into metaphysics,

which is the theory of reality, ethics, the theory of the good, and

aesthetics, the theory of the beautiful. Modern divisions do not,

however, altogether fit in with Greek philosophy, and it is better to

let the natural divisions develop themselves as we go on, than to

attempt to force our material into these moulds.

If, now, we look round the world and ask; in what countries and what

ages the kind of thought we have described has attained a high degree

of development, we shall find such a development only in ancient

Greece and in modern Europe. There were great civilizations in Egypt,

China, Assyria, and so on. They produced art and religion, but no

philosophy to speak of. Even {14} ancient Rome added nothing to the

world's philosophical knowledge. Its so-called philosophers, Marcus

Aurelius, Seneca, Epictetus, Lucretius, produced no essentially new

principle. They were merely disciples of Greek Schools, whose writings

may be full of interest and of noble feeling, but whose essential

thoughts contained nothing not already developed by the Greeks.

The case of India is more doubtful. Opinions may differ as to whether

India ever had any philosophy. The Upanishads contain

religio-philosophical thinking of a kind. And later we have the six

so-called schools of philosophy. The reasons why this Indian thought

is not usually included in histories of philosophy are as follows.

Firstly, philosophy in India has never separated itself from religious

and practical needs. The ideal of knowledge for its own sake is rarely

to be found. Knowledge is desired merely as a means towards salvation.

Philosophy and science, said Aristotle, have their roots in

wonder,--the desire to know and understand for the sole sake of

knowing and understanding. But the roots of Indian thought lie in the

anxiety of the individual to escape from the ills and calamities of

existence. This is not the scientific, but the practical spirit. It

gives birth to religions, but not to philosophies. Of course it is a

mistake to imagine that philosophy and religion are totally separate

and have no community. They are in fact fundamentally akin. But they

are also distinct. Perhaps the truest view is that they are identical

in substance, but different in form. The substance of both is the

absolute reality and the relation of all things, including men, to

that reality. But whereas philosophy presents this subject-matter

scientifically, in {15} the form of pure thought, religion gives it in

the form of sensuous pictures, myths, images, and symbols.

And this gives us the second reason why Indian thought is more

properly classed as religious than philosophical. It seldom or never

rises from sensuous to pure thought. It is poetical rather than

scientific. It is content with symbols and metaphors in place of

rational explanations, and all this is a mark of the religious, rather

than the philosophical, presentation of the truth. For example, the

main thought of the Upanishads is that the entire universe is derived

from a single, changeless, eternal, infinite, being, called Brahman or

Paramatman. When we come to the crucial question how the universe

arises out of this being, we find such passages as this:--"As the

colours in the flame or the red-hot iron proceed therefrom a

thousand-fold, so do all beings proceed from the Unchangeable, and

return again to it." Or again, "As the web issues from the spider, as

little sparks proceed from fire, so from the one soul proceed all

living animals, all worlds, all the gods and all beings." There are

thousands of such passages in the Upanishads. But obviously these

neither explain nor attempt to explain anything. They are nothing but

hollow metaphors. They are poetic rather than scientific. They may

satisfy the imagination and the religious feelings, but not the

rational understanding. Or when again Krishna, in the Bhagavat-Gita,

describes himself as the moon among the lunar mansions, the sun among

the stars, Meru among the high-peaked mountains, it is clear that we

are merely piling sensuous image upon sensuous image without any

further understanding of what the nature of the absolute being in its

own self is. {16} The moon, the sun, Meru, are physical sense-objects.

And this is totally sensuous thinking, whereas the aim of philosophy

is to rise to pure thought. In such passages we are still on the level

of symbolism, and philosophy only begins when symbolism has been

surpassed. No doubt it is possible to take the line that man's thought

is not capable of grasping the infinite as it is in itself, and can

only fall back upon symbols. But that is another question, and at any

rate, whether it is or is not possible to rise from sensuous to pure

thought, philosophy is essentially the attempt to do so.

Lastly, Indian thought is usually excluded from the history of

philosophy because, whatever its character, it lies outside the main

stream of human development. It has been cut off by geographical and

other barriers. Consequently, whatever its value in itself, it has

exerted little influence upon philosophy in general.

The claim is sometimes put forward by Orientals themselves that Greek

philosophy came from India, and if this were true, it would greatly

affect the statement made in the last paragraph. But it is not true.

It used to be believed that Greek philosophy came from "the East," but

this meant Egypt. And even this theory is now abandoned. Greek

culture, especially mathematics and astronomy, owed much to Egypt. But

Greece did not owe its philosophy to that source. The view that it did

was propagated by Alexandrian priests and others, whose sole motive

was, that to represent the triumphs of Greek philosophy as borrowed

from Egypt, flattered their national vanity. It was a great thing,

wherever they found anything good, to say, "this must have come from

us." A precisely similar motive lies behind the {17} Oriental claim

that Greek philosophy came from India. There is not a scrap of

evidence for it, and it rests entirely upon the supposed resemblance

between the two. But this resemblance is in fact mythical. The whole

character of Greek philosophy is European and unoriental to the

back-bone. The doctrine of re-incarnation is usually appealed to. This

characteristically Indian doctrine was held by the Pythagoreans, from

whom it passed to Empedocles and Plato. The Pythagoreans got it from

the Orphic sect, to whom quite possibly it came indirectly from India,

although even this is by no means certain, and is in fact highly

doubtful. But even if this be true, it proves nothing. Re-incarnation

is of little importance in Greek philosophy. Even in Plato, who makes

much of it, it is quite unessential to the fundamental ideas of his

philosophy, and is only artificially connected with them. And the

influence of this doctrine upon Plato's philosophy was thoroughly bad.

It was largely responsible for leading him into the main error of his

philosophy, which it required an Aristotle to correct. All this will

be evident when we come to consider the systems of Plato and

Aristotle.

The origin of Greek philosophy is not to be found in India, or Egypt,

or in any country outside Greece. The Greeks themselves were solely

responsible for it. It is not as if history traces back their thought

only to a point at which it was already highly developed, and cannot

explain its beginnings. We know its history from the time, so to

speak, when it was in the cradle. In the next two chapters we shall

see that the first Greek attempts at philosophising were so much the

beginnings of a beginner, were so very crude and unformed, that it is

{18} mere perversity to suppose that they could not make these simple

efforts for themselves. From those crude beginnings we can trace the

whole development in detail up to its culmination in Aristotle, and

beyond. So there is no need to assume foreign influence at any point.

Greek philosophy begins in the sixth century before Christ. It begins

when men for the first time attempted to give a scientific reply to

the question, "what is the explanation of the world?" Before this era

we have, of course, the mythologies, cosmogonies, and theologies of

the poets. But they contain no attempt at a naturalistic explanation

of things. They belong to the spheres of poetry and religion, not to

philosophy.

It must not be supposed, when we speak of the philosophy of Greece,

that we refer only to the mainland of what is now called Greece. Very

early in history, Greeks of the mainland migrated to the islands of

the Aegean, to Sicily, to the South of Italy, to the coast of Asia

Minor, and elsewhere, and founded flourishing colonies. The Greece of

philosophy includes all these places. It is to be thought of rather

racially than territorially. It is the philosophy of the men of Greek

race, wherever they happened to be situated. And in fact the first

period of Greek philosophy deals exclusively with the thoughts of

these colonial Greeks. It was not till just before the time of

Socrates that philosophy was transplanted to the mainland.

Greek philosophy falls naturally into three periods. The first may be

roughly described as pre-Socratic philosophy, though it does not

include the Sophists who were both the contemporaries and the

predecessors of Socrates. This period is the rise of Greek philosophy.

{19} Secondly, the period from the Sophists to Aristotle, which

includes Socrates and Plato, is the maturity of Greek philosophy, the

actual zenith and culmination of which is undoubtedly the system of

Aristotle. Lastly, the period of post-Aristotelian philosophy

constitutes the decline and fall of the national thought. These are

not merely arbitrary divisions. Each period has its own special

characters, which will be described in the sequel.

A few words must be said of the sources of our knowledge of

pre-Socratic philosophy. If we want to know what Plato and Aristotle

thought about any matter, we have only to consult their works. But the

works of the earlier philosophers have not come down to us, except in

fragments, and several of them never committed their opinions to

writing. Our knowledge of their doctrines is the result of the

laborious sifting by scholars of such materials as are available.

Luckily the material has been plentiful. It may be divided into three

classes. First come the fragments of the original writings of the

philosophers themselves. These are in many cases long and important,

in other cases scanty. Secondly, there are the references in Plato and

Aristotle. Of these by far the most important are to be found in the

first book of Aristotle's "Metaphysics," which is a history of

philosophy up to his own time, and is the first attempt on record to

write a history of philosophy. Thirdly, there is an enormous mass of

references, some valuable, some worthless, contained in the works of

later, but still ancient, writers.

{20}

A critical history of Greek philosophy · 第 1 / 21 章