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Vol.64 , No.3(2016)211渡辺 俊和「存在否定命題の問題について : ディグナーガ,ウッディヨータカラ,ダルマキールティ」

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(1)

Joumal

oflndian and

BuddhistStudies

VOI.

64,

No,

3,

March

2016

(221)

On

the

Problem

ofNegative

Existential

Propositions:

Dignaga,

Uddyotakara,

and

Dharmakirti

WATANABE

Toshikazu

o.

Introduction

Proofs

which contain negative existential

propositions

such as `・X

does

not exist" are

problematic

because

they

negate something

that

is

nonexistent.

If

an object

is

non-existent, can

the

act of negating such an object

be

established?

Indian

Buddhists

who

need

to

prove

the

nonexistence ofthings, such as

primordial

matter

(pradhana)

and self

(atrnan),

etc., advocated

by

their

adversaries, struggled with

this

problem.

In

his

IStydyamukha

Dign5ga

(ca.

480-540)

tries

to

offer a solution.

The

Naiyayika

Uddyetakara

(6c),

defending

the

existence of a selC criticizes

Dignaga's

idea.

On

the

other

hand,

Dharmakini

(sso?-6so?)

reinforces

Dignaga's

theory

and

brings

fbrth

a

counterargu-ment against

Uddyotakara.

The

aim of

this

paper

is

to

examine

the

views of

Dign5ga,

Uddyotakara,

and

Dharmakirti

about

the

problem

of negative existential

propositions

and

to

show

its

historical

development

in

Indian

philosophy

1.

Digniga

Dignaga

refers

to

the

fbllowing

proof

in

his

NMu

when

he

explains

the

general

rule of

an

inference

that

one

property

of

the

subject

(i.e.,

sad}rya-dharma

1

a

property

to

be

proved)

is

known

through

another

property

of

the

sarne subject

(i.e.,

sadhana-dharma

1

a

proving

property):

<Proof 1)

[Primordial

matter]

does

not exist

because

it

is

not

perceived,

i)

He

explains

this

(Proof1> as

fbllows:

when

the

nonexistence

[efprimordial

matter]

is

proved

[on

account of

jts

not

being

perceived],

(2)

(222)

On

the

Problern

ofNegative

Existential

Propositions

(WATANABE)

"nonperception"

is

a

property

ofa conceptually constructed object

(kalpita),

2)

According

to

this

explanatjon,

the

subject of

the

negative existential

proposition,

though

it

is

not accepted

by

Buddhists

as a real entity can

be

regarded as a conceptual

construction,

i,e.,

as a

kind

ef existence.

Therefore,

if

this

theory

is

adopted, any

pseudo-entitM

such as

primordial

matter,

is

accepted as a substratum of

the

logical

reason, and

the

fa11acy

Qf

aS'Tayasiddha

can

thereby

be

avoided.

And

this

theory

enables

Dignaga

to

deal

with

the

negative reasoning as a

proper

proof

(sa'dhana).

This

strategy)

fbllowing

Prof.

Tillemans,

is

called

the

"principle

of conceptual subjects." 3)

In

the

third

chapter of

Prama"asamuccaya,

however,

Dignaga

employs another

method

fbr

avoiding

the

fa11acy

of

ds'raydsiddha.

There,

he

says

that

when

the

negative existential

proposition

is

put

forth

just

fbr

the

purpose

of refuting

the

opponent's

position,

its

logical

reason

does

not

have

to

fu1fi11

the

first

characteristic of

the

proper

logical

reason,

i.e.,

paksadharmatva.`)

As

seen

below,

the

subject of

Uddyotakara's

criticism

is

the

"principle of conceptual subjects,"

but

not

the

theory

propounded

by

Dignaga

in

the

PS.

2.

Uddyotakara's

Critique

In

his

Atydyavarttika

on

Atydyasatra

3.1.1,

Uddyotakara

deals

with

the

proofs

for

nonexistence of

ditrnan

probably

put

fbrth

by

Buddhists.

There,

he

criticizes

the

fo11owing

three

proofs:

(A)

A

selfdoes not exist

because

it

is

not

produced,

like

a rabbiVs

horn.

(NV

319,15-323,11)

(B)

A

selfdoes not exist

because

it

is

not

perceived,

[like

a rabbit's

horn],

(NV

323,12-325,16)

(C)

A

living

body

does

not

possess

a self

becauSe

it

is

existenL

(NV

325,17-326,6)

Of

these,

as

Prof

Steinkellner

has

pointed

out,

proof

(B)

is

intended

to

refer

to

<Proof

1>

of

the

NMu.

5}

Here

Uddyotakara

applies

DignAga's

t`principle

of conceptual subjects," which

is

originally

presented

with regard

to

the

negative

proof

of

primordial

matter,

to

the

negative

proof

ofa sel

£

Discussing

the

logical

reason of

proof

(B),

uddyotakara

mentions

the

"principle

of

conceptual subjects" and criticizes

it.

[Objection

(Dignaga):]

"Nonperception"

(anupalabdhi)

is

a

property

of

[a

selflwhich

is

conceptually constructed.

[Answer:]

It

is

to

be

explained

in

what way

lyou

can sqy] `'of

that

-

1264

(3)

-On

the

Problem

ofNegative

Existential

Propositions

(WATANABE)

(223)

which

is

conceptually constructed," whether

[the

self

is

conceptually constructed] as a

[real]

existence or as a nonexistence?

If

[the

self

is

conceptually constructed] as a

[real]

existence,

then

it

does

not

possess

nonperception as

its

propertyL

For,

once a

post

is

conceptually

constructed as a man,

properties

of the

post

do

not appear

[at

the

post

anymore].

Or

if

nonperception

is

a

property

of

[the

self which

is]

conceptually constructed as a nonexistence,

then

the

nonperception

is

established as a

property

[of

the

selfl,

[In

this

case],

howeve;

it

is

useless

to

conceptually construct

it,

Why?

Because

conceptual construction

(kalpana)

means

being

in

a

different

way

(atatha-bhava),

To

be

more

precise,

conceptual construction means indeed

being

in

a

diflhrent

way; and the self

is

conceptually constructed as a nonexistence,

hence

the

self

[should]

not

be

a nonexistence.

If

[the

selfi

is

not a nonexistence,

then

it

is

useless

to

conceptually censtruct

it.

6)

For

Udclyotakara,

only

two

ways ofbeing conceptually constructed are acceptable,

i.e.,

either as a real existence

or

as

a nonexistence.

In

the

former

case, when

the

subject

`tself"

is

conceptually constructed as a real existence,

it

should

be

perceived.

And

hence,

the

logical

reason "nonperception" cannot

be

a

property

ofthe subject and

fails

to

be

a

proper

reason.

In

the

latter

case, on

the

other

hand,

the

logical

reason can

be

a

property

ofthe subject

because

the

self

is

conceptually constructed as a nonexistence.

However,

due

to

the

definition

of

the

conceptual

construction,

i.e.,

being

in

a

different

waM

it

would

fbllow

that

the

subject "self" must originally

be

a real existence.

Next,

Uddyotakara

points

out

that

the

proposition

"a self

does

not exist," which

is

shared

by

both

proof

(A)

and

(B),

also contains a

fault.

His

criticism runs as

fo11ows:

First,

in

the

[proposition

"a

self

does

not exist"],

two

terms,

i,e,,

"self"

and "does not exist," contradict

[each

other]. The terrn "self"

which

is

coreferential with the

term

"does

not exist"

does

not convey the nonexistence ofa selfl

Why?

[Because

the

term]

'`self" expresses an entity

[The

term]

`'does

not exist"

is

its

denial.

')

For

Uddyotakara

every wordlterm must

have

its

meaning.B)

If

the

object of

the

word

"self"

does

not exist

in

reality,

the

word would

be

meaningless.

Then,

what

is

the

meaning of

the

term

`'does

not exist?"

A

negative existential

proposition

such as "X

does

not exist" cannot convey

the

nonexistence of

the

subject

X

in

general

but

it

just

expresses

the

nonexistence of

x

in

a

particular

time

or

place.

For

example, when

the

sentence "pots

do

not exist"

is

uttered,

it

means

that

a

pot

does

not exist

in

the

kitchen,

etc.,

but

does

not mean

there

are no

pots

at all.

With

regard

to

a selL

however,

even such a

particular

denial

cannot

be

applicable

because

it

is

omnipresent and eternal.

(4)

(224)

OntheProblemofNegativeExistentialPropositions

(WATANABE)

Therefore,

the

proposition

"a

self

does

not exist" cannot

be

established. 9)

In

this

way;

uddyotakara

criticizes

Dignaga's

"principle of conceptual subjects"

by

pointing

out

(1)

the

problem

of

paksadharmatva

of

the

logical

reason and

(2)

the

problem

of

the

proposition

itself

in

<proof

1).

iO]

3.

Dharmakirti's

Defence

Dharmakirti

adopts

the

"principle of conceptual subjects" and,

fbr

providing

counterargurnents against

Uddyotakara,

he

develops

Dignaga's

theory

frorn

the

point

of view ofvijn-anavada.

In

his

PV

1.205-206

(=

PVin

3.53-54),

explaining

Dignaga's

<Proof

1),

Dharmakirti

says

as

fo11ows:

The object of words, which

is

completely

derived

from

conceptual cognition

produced

by

the

beginningless

latent

tendency,

is

a

dharma

of

three

kinds:

based

on something existent,

something nonexistent or

both.

When

the

[object

of words such ast`primordial

matter," etc.],

which

is

not

based

on existence,

is

[the

subject]

to

be

proven,

then

the

nonperception of

this

(i.e.,

the

object of

the

word "primordial matter") as

being

in

such a way

[i.e.,

as existing

externally]

is

the

logical

reason.

The

nonexistence of

the

[object]

itselfis

not

[that

which

is

to

be

proved],

fbr

the

words

[like

"primordial

matteg" etc.]are used,

commenting

on

this,

he

says:

The

object of

these

words

is

not

[external]

particulars

(svalaksapa).

[The

words]

have

an entity

(artha)

which appears

in

the conceptual cognition

produced

by

the

beginningless

latent

tendency

as

their

object.

And

both

speaker and

listener

share such a conceptual cognition

because

[the

former]

uses

[words]

according

to

the

intention

to

convey a

thing

as

it

appears

[to

his

conceptual cognition] and

because

[the

latteg

by

hearing

the

speaker's words,]

brings

about

the

conceptual cognition which

has

the

sarne representation

(aka-ra)

[as

that

ofthe speaker],]i)

Just

1ike

uddyotakara,

Dharmakirti

also accepts

the

idea

that

every word, even such as

'`primordial

matter," etc.,

has

a real entity as

its

object.

But

unlike

Uddyotakara,

he

asserts

that

the

object of words

is

not an external entity

but

a representation,

i.e.,

an

internal

entity; appearing

to

the

conceptual cognition.

In

this

way,

Dharmakirti

interprets

Dignaga's

"principle

of conceptual subjects" and

thereby

he

can solve

the

two

problems

of

Dignaga's

theory

pointed

out

by

Udclyotakara.

First,

since

the

object of

the

word "self"

is

a representation appearing

in

the

speaker's or

listener's

mind,

it

is

(5)

-On

the

Preblem

ofNegative

Existential

Propositions

(WATANABE)

(225)

not

perceived

as an external

entity

Therefbre,

the

logical

reason

"nonperception"

in

<Proof

1>

can

be

a

property

ofthe subject ofthe

thesis

(paksadharma).

second,

while

the

object ofthe word "self" exists

internallM

it

"does not exist" externally:

Therefore,

no

contradiction

would

occur

in

the

proposition

of

<Proof

1>

any

longer.

In

the

later

part

of

the

PVin

3,

Dharmakirti

mentions some objections, one of which

is

most

probably

from

Uddyotakara.

For

example, another says:

[The

expression] '`a self

does

not exist"

is

a

fa11acy

of

the

proposition

called contradiction of

the

proposition

because

when

the

object

(i.e.,

the

selfl

is

negated,

it

is

not

possible

touse

the

word

[which

expresses the object].

When

one employs

[the

expression],

he

postulates

the

object and,

[at

the

same

time,]

denie$

it.

Therefbre,

$ince

there

is

a

contradiction

between

two

terms

ofthe

proposition,

it

is

a

fa11acy

ofthe

proposition.

iZ>

Dharmakirti's

answer

to

this

is

as

fbllows:

Indeed,

these

[objections]

are not

included

in

the

false

rejoinders

qa-ti),

whose

defining

characteristics

have

been

explained

[in

Pvin

3,ssab],

and

[these

are] not refutation either

because

[the

proposition

'`a

self

does

not exist"] negates an

[external]

particular

(i.e.,

a selfas a

real entity) without

denying

the

object ofthe word

(i.e.,

the

representation).

This

has

atready

been

explained. i3)

Dharmakirti

sees

Uddyotakara's

objection as a completely misguided one and

hence

it

is

not even classified as a

false

rejoinder.

And

in

the

vN,

the

objection

is

regarded as a

kind

of one of

the

points

of

defeat

(nigrahasthana).

[Your

objection

that]

there

is

acontradiction

between

two

terms

ofyour

proposition,

i.e.,

'`self"

and "does

not exist,"

is

a

[fa11acious]

indication

of

the

fa11acy

ofthe

proposition,

i4}

In

this

way

Dharmakirti

upgrades

Dignaga's

"principle of conceptual subjects"

by

introducing

his

theory

of

language

in

order

to

save

Dignfiga's

theory

from

Uddyotakara's

critique.

4.

Concluding

Remarks

With

regard

to

<Proof

1>

and

proof

(B),

which

possess

a

negative

existential

proposition,

a clear and close relatibnship

is

observed among

the

three

philosophers,

i.e,,

Dignaga,

Uddyotakara,

and

Dharmakirti,

Although

Dignaga

does

not adopt

the

"principle

of conceptual subjects"

as

his

final

position

for

avoiding

the

fa11acy

of

ds'iztydsiddha,

(6)

-1267-(226)

OntheProblemofNegativeExistentialPropositions

(WATANABE)

Uddyotakara

wisely

finds

out

its

potential

for

becoming

a

threat

to

the

proof

fbr

the

existence of self

Dharmakirti

tries

to

respond

to

Uddyotakara's

critiques

by

relying on

his

Buddhist

ontological

theory.

From

this

it

is

reconfirmed

that

uddyotakara

plays

a

very

important

role when

Dharmakirti,

taking

Dignaga's

theory

as a starting

point,

builds

his

own systern ofphilosophy

*I would

like

to

thank

Ms.

Katharine

Apostle

and an anonymous reviewer

fbr

correcting my

English.

Notes

1)

NMu

(Katsura

[1978:

110])

lcl:

utirsff,,..

Jlgi]It'#ik;

cfi

PVSV

105,15

(=

PVin

3

67,4):

na santi

pradhctnadayo

'nupalabdheh,

2)

NMu

(Katsura

[lg78:

110]) lc2-4:

Zi

Sf.

ms

ff,

,,

,

lbi

rv

!le

.)iil

Jf{fiI

e

Ul

.

re

ilek

oji

A.l4,

,

JfiJfi

Ul

ma

;see

PVSV

107,9-10

(=

PVin

3

70,4):

kalpitasyanupalabdhir

dharmah.

3)

Tillemans

[1999:

174].

4) For

the

details

ofthis argument, see

Watanabe

[fbrthcoming],

5)

Steinkellner

[2013:

287-288,

note

605].

Taber

[2012:

107-109]

suggests

the

relationship

between

proof

(B)

and the argument

found

in

the

ninth chapter of

the

Abhidharrnakos'abhasya

of

Vasubandhu.

But

it

is

not acceptable.

As

fbr

proof

(A),

Tamaru

[lgsl]

reports

that

a similar

argument

is

found

in

Bhaviveka's

PrcijnNapradipa.

Taber

[2012:

100, n.

8;

106, n.

30]

notes

that

Bhaviveka

also

gives

a similar

discussion

with

proof

(A)

and

(C)

in

his

Madltyamakahrdaya,

For

a

detailed

summary ofthese three

proofs,

see

Oetke

[1988:

361-379].

6)

NV324,21-325,3.

7)

NV319,15-18.

8)

See

NV

320,16-17:

na

1ty

ekarri

padarri

nirarthakarTt

paEfyamah.

9)

SeeNV320,6-15.

Io)

Uddyotakara

discusses

the

problerri

of

the

exaniple

in

the

proofs

(A)

and

(B),

too.

A$

this

is

beyond

the

s[ope ofthis

pape4

I

will examine

it

on a

different

occasion.

11)

PVSV

105,24-27

(pt

PVin

3

67,12-68,3).

12)

PVin3136,5-8.

13)

PVin3136,9-IL

14)

VN23,12-14,

Abbreviations

NMu lstydyamukha ofDignaga.

Chinese

Translation

by

Xuanzang

]kee.

Yinming zhangli rnenlun

ben

pa

ng

jllpa

FH

deJlsc,

Taish6

shinshif

daiz6ky6

JCiEsuifJltes

£

,no.

1628,

vol.

32,

la4-6a7.

NV

Atydyavarttika

of

Uddyotakara.

INlydyabhaEyavarttika

ofBha-radvoja

Udclyotakara.

Ed.

Anantalal

Thakur.

Nyayacaturgranthika,

vol. 2.New Delhi: Indian

Council

of

Philosophical

Research,

1997.

(7)

-On

the

Problem

ofNegative

Existential

Propositions

(WATANABE)

(227)

psPVin

3

pvsv

wu

Pramapctsamuccaya

ofDignaga.

D

no,

4204;

P

no.

5701,

P

no,

5702.

Pramdipavinis'caya

of

Dharmakirti,

chapter

3.

Dharmakirti's

Prama-n,avinis'caya Chapter 3.Ed.

Pascale

Hugon

and

Toru

Tomabechi.

5anskrit

Texts

from

the

Tibetan Autonomous Region, no, 7.

Beljing:

China

Tibetology

Publishing

House;

Vienna:

Austrian

Academy

of

Sciences

Press,

2011.

Pnamdi4avarttika

of

Dharmakini.

The

Prumapavantikam

ofDharrnakirti:

The

First

Chapter

with

the

Autocommentary.

Ed.

Raniero

Gnoli.

Serie

Orientale

Roma

23.

Roma:

Istituto

italiano

per

il

Medio

ed

Estremo

Oriente,

1960.

Vadartydya

of

Dharmakirti.

Dharmakirtis 1lddaaydyah.

Teil

1,

Sanskrit-Tlaxt.

Ed.

Michael

Torsten

Much.

Ver6ffentlichungen

der

Kommission

flir

Sprachen

und

Kulturen

Sttd-

und

Ostasiens

2s.

Wien:

Verlag

der

6sterreichischen

Akademie

der

Wissenschaften,

1991,

Bibliography

Katsura

Sh6ryU

ifrw

wa.

1978.

"Inrrry6

sho-rimonron

kenkya

(2)"

pa

opiEmpPfi

?eeblfi

[=]

.

Hiroshima

Daigaku

Bungakubu

klyO

ti]l

RJi<\iSCe}Ezz

£

et

38:

11o-13o.

Oetke,

Claus.

1988. ,,Ich" und

das

Ich:

Analytfsche

Untersuchungen

zur

buddhistisch-brahmanischen

Atmankontroverse.

Stuttgart:

Franz Steiner verlag.

Steinkellner,

Ernst. 2o13.

Dharrnakfttis

fuhe

Logik:

Annotierte

Ubersetzung

der

logischen

Teile

von

Pramanavarttika

1

mit

der

V.rtti.

Vol.

2,

Introduction,

Anmerkungen,

AnhUnge

etc.

Tokyo:

International

Institute

for

Buddhist

Studies

of

the

International

College

for

Postgraduate

Buddhist

Studies.

Taber,

John.

2012, "Uddyotakara's

Defence

ofa

Self."

In

Hindu

and

Buddhist

ldeas

in

Dialogue:

Selfand

No-Selfi

ed.

Irina

Kuznetsova

etal.,

97-114,

Surrey:

Ashgate

Publishing.

Tamaru Toshiaki

MSL

ue

ee.

Igsl. "Uddyotakara

no muga-ron

hihan"

Uddyotakara

O

fl.,.

tt

whnt

\U

,

lndogaku

Bukkyo-gaku

kenkya

EIjN7tL

tyVMft

ss:

g4o-g43.

Tillemans,

Tom.

1999.

Scn'pture,

Logic,

Language:

Essays

on

Dharmakirti

and

His

Tibetan

Successors.

Boston:WisdomPublications.

Watanabe

Toshikazu.

Forthcoming.

"Dharmakirti

and

Hi$

Successors

on

ds'raydsiddha

and

prasafigavipar

yaya."

In

the

proceeding

ofsth

International

Dharmakirti conference.

(Work

on

this

paper

has

been

generously

supported

by

the

2014

BDK

Fellowship

fbr

Japanese

Scholar

of

the

Bukl(yo

Dendo

Kyokai

fbr

my

preject

`:Acceptance of

logical

thought

in

Mahayana

Buddhism

and

its

development.")

Keywords

Dignaga,Uddyotakara,Dharmakirti,a'tman,kalpita

<Research

Fellow,

the

Institute

for

the

Cultural

and IntellectualHistory ofAsia ofthe

Austrian

Academy

of

Sciences)

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