METAPHYSICS

第32章

WEhavesaidpreviously,inourdistinctionofthevarious

meaningsofwords,that’one’hasseveralmeanings;thethingsthat

aredirectlyandoftheirownnatureandnotaccidentallycalledone

maybesummarizedunderfourheads,thoughthewordisusedinmore

senses。(1)Thereisthecontinuous,eitheringeneral,or

especiallythatwhichiscontinuousbynatureandnotbycontactnor

bybeingtogether;andofthese,thathasmoreunityandisprior,

whosemovementismoreindivisibleandsimpler。(2)Thatwhichisa

wholeandhasacertainshapeandformisoneinastillhigher

degree;andespeciallyifathingisofthissortbynature,andnot

byforcelikethethingswhichareunifiedbyglueornailsorby

beingtiedtogether,i。e。ifithasinitselfthecauseofits

continuity。Athingisofthissortbecauseitsmovementisoneand

indivisibleinplaceandtime;sothatevidentlyifathinghasby

natureaprincipleofmovementthatisofthefirstkind(i。e。local

movement)andthefirstinthatkind(i。e。circularmovement),thisis

intheprimarysenseoneextendedthing。Somethings,then,areonein

thisway,quacontinuousorwhole,andtheotherthingsthatareone

arethosewhosedefinitionisone。Ofthissortarethethingsthe

thoughtofwhichisone,i。e。thosethethoughtofwhichis

indivisible;anditisindivisibleifthethingisindivisibleinkind

orinnumber。(3)Innumber,then,theindividualisindivisible,

and(4)inkind,thatwhichinintelligibilityandinknowledgeis

indivisible,sothatthatwhichcausessubstancestobeonemustbe

oneintheprimarysense。’One’,then,hasallthesemeanings-the

naturallycontinuousandthewhole,andtheindividualandthe

universal。Andalltheseareonebecauseinsomecasesthemovement,

inothersthethoughtorthedefinitionisindivisible。

Butitmustbeobservedthatthequestions,whatsortofthings

aresaidtobeone,andwhatitistobeoneandwhatisthe

definitionofit,shouldnotbeassumedtobethesame。’One’has

allthesemeanings,andeachofthethingstowhichoneofthesekinds

ofunitybelongswillbeone;but’tobeone’willsometimesmean

beingoneofthesethings,andsometimesbeingsomethingelsewhichis

evennearertothemeaningoftheword’one’whiletheseother

thingsapproximatetoitsapplication。Thisisalsotrueof

’element’or’cause’,ifonehadbothtospecifythethingsofwhich

itispredicableandtorenderthedefinitionoftheword。Forina

sensefireisanelement(anddoubtlessalso’theindefinite’or

somethingelseofthesortisbyitsownnaturetheelement),butina

senseitisnot;foritisnotthesamethingtobefireandtobe

anelement,butwhileasaparticularthingwithanatureofitsown

fireisanelement,thename’element’meansthatithasthis

attribute,thatthereissomethingwhichismadeofitasaprimary

constituent。Andsowith’cause’and’one’andallsuchterms。For

thisreason,too,’tobeone’means’tobeindivisible,being

essentiallyonemeansa“this“andcapableofbeingisolatedeitherin

place,orinformorthought’;orperhaps’tobewholeand

indivisible’;butitmeansespecially’tobethefirstmeasureofa

kind’,andmoststrictlyofquantity;foritisfromthisthatit

hasbeenextendedtotheothercategories。Formeasureisthatby

whichquantityisknown;andquantityquaquantityisknowneither

bya’one’orbyanumber,andallnumberisknownbya’one’。

Thereforeallquantityquaquantityisknownbytheone,andthatby

whichquantitiesareprimarilyknownistheoneitself;andsotheone

isthestarting-pointofnumberquanumber。Andhenceintheother

classestoo’measure’meansthatbywhicheachisfirstknown,andthe

measureofeachisaunit-inlength,inbreadth,indepth,in

weight,inspeed。(Thewords’weight’and’speed’arecommontoboth

contraries;foreachofthemhastwomeanings-’weight’meansb

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