METAPHYSICS

第33章

Theoneandthemanyareopposedinseveralways,ofwhichone

istheoppositionoftheoneandpluralityasindivisibleand

divisible;forthatwhichiseitherdividedordivisibleiscalleda

plurality,andthatwhichisindivisibleornotdividediscalledone。

Nowsinceoppositionisoffourkinds,andoneofthesetwotermsis

privativeinmeaning,theymustbecontraries,andneither

contradictorynorcorrelativeinmeaning。Andtheonederivesitsname

anditsexplanationfromitscontrary,theindivisiblefromthe

divisible,becausepluralityandthedivisibleismoreperceptible

thantheindivisible,sothatindefinitionpluralityispriorto

theindivisible,becauseoftheconditionsofperception。

Totheonebelong,asweindicatedgraphicallyinour

distinctionofthecontraries,thesameandthelikeandtheequal,

andtopluralitybelongtheotherandtheunlikeandtheunequal。’The

same’hasseveralmeanings;(1)wesometimesmean’thesame

numerically’;again,(2)wecallathingthesameifitisonebothin

definitionandinnumber,e。g。youareonewithyourselfbothin

formandinmatter;andagain,(3)ifthedefinitionofitsprimary

essenceisone;e。g。equalstraightlinesarethesame,andsoare

equalandequal-angledquadrilaterals;therearemanysuch,butin

theseequalityconstitutesunity。

Thingsarelikeif,notbeingabsolutelythesame,norwithout

differenceinrespectoftheirconcretesubstance,theyarethesame

inform;e。g。thelargersquareislikethesmaller,andunequal

straightlinesarelike;theyarelike,butnotabsolutelythesame。

Otherthingsarelike,if,havingthesameform,andbeingthingsin

whichdifferenceofdegreeispossible,theyhavenodifferenceof

degree。Otherthings,iftheyhaveaqualitythatisinformoneand

same-e。g。whiteness-inagreaterorlessdegree,arecalledlike

becausetheirformisone。Otherthingsarecalledlikeifthe

qualitiestheyhaveincommonaremorenumerousthanthoseinwhich

theydiffer-eitherthequalitiesingeneralortheprominent

qualities;e。g。tinislikesilver,quawhite,andgoldislike

fire,quayellowandred。

Evidently,then,’other’and’unlike’alsohaveseveral

meanings。Andtheotherinonesenseistheoppositeofthesame(so

thateverythingiseitherthesameasorotherthaneverything

else)。Inanothersensethingsareotherunlessboththeirmatter

andtheirdefinitionareone(sothatyouareotherthanyour

neighbour)。Theotherinthethirdsenseisexemplifiedintheobjects

ofmathematics。’Otherorthesame’canthereforebepredicatedof

everythingwithregardtoeverythingelse-butonlyifthethingsare

oneandexistent,for’other’isnotthecontradictoryof’the

same’;whichiswhyitisnotpredicatedofnon-existentthings(while

’notthesame’issopredicated)。Itispredicatedofallexisting

things;foreverythingthatisexistentandoneisbyitsvery

natureeitheroneornotonewithanythingelse。

Theother,then,andthesamearethusopposed。Butdifference

isnotthesameasotherness。Fortheotherandthatwhichitisother

thanneednotbeotherinsomedefiniterespect(foreverythingthat

isexistentiseitherotherorthesame),butthatwhichis

differentisdifferentfromsomeparticularthinginsomeparticular

respect,sothattheremustbesomethingidenticalwherebythey

differ。Andthisidenticalthingisgenusorspecies;foreverything

thatdiffersdifferseitheringenusorinspecies,ingenusifthe

thingshavenottheirmatterincommonandarenotgeneratedoutof

eachother(i。e。iftheybelongtodifferentfiguresof

predication),andinspeciesiftheyhavethesamegenus(’genus’

meaningthatidenticalthingwhichisessentiallypredicatedofboth

thedifferentthings)。

Contrariesaredifferent,andcontrarietyisakindofdifference。

Thatwearerightinthissuppositionisshownbyinduction。Forall

ofthesetooareseentobedifferent;theyarenotmerelyother,

butsomeareotheringenus,andothersareinthesamelineof

predication,andthereforeinthesamegenus,andthesameingenus。

Wehavedistinguishedelsewherewhatsortofthingsarethesameor

otheringenus。

Sincethingswhichdiffermaydifferfromoneanothermoreor

less,thereisalsoagreatestdifference,andthisIcall

contrariety。Thatcontrarietyisthegreatestdifferenceismadeclear

byind

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