第1章
加入书架 A- A+
点击下载App,搜索"An Essay on the Principle of Population",免费读到尾

  ANESSAYONTHEPRINCIPLEOFPOPULATION,ASITAFFECTSTHEFUTURE

  IMPROVEMENTOFSOCIETYWITHREMARKSONTHESPECULATIONSOFMR。

  GODWIN,M。CONDORCET,ANDOTHERWRITERS。

  LONDON,PRINTEDFORJ。JOHNSON,INST。PAUL’SCHURCH—YARD,1798。

  PrefaceTHEfollowingEssayowesitsorigintoaconversationwithafriend,onthesubjectofMrGodwin’sessayon’AvariceandProfusion’inhisEnquirer。Thediscussionstartedthegeneralquestionofthefutureimprovementofsociety。andtheAuthoratfirstsatdownwithanintentionofmerelystatinghisthoughtstohisfriend,uponpaper,inaclearermannerthanhethoughthecoulddoinconversation。Butasthesubjectopeneduponhim,someideasoccurred,whichhedidnotrecollecttohavemetwithbefore;andasheconceivedthateveryleastlight,onatopicsogenerallyinteresting,mightbereceivedwithcandour,hedeterminedtoputhisthoughtsinaformforpublication。

  TheEssaymight,undoubtedly,havebeenrenderedmuchmorecompletebyacollectionofagreaternumberoffactsinelucidationofthegeneralargument。Butalongandalmosttotalinterruptionfromveryparticularbusiness,joinedtoadesire(perhapsimprudent)ofnotdelayingthepublicationmuchbeyondthetimethatheoriginallyproposed,preventedtheAuthorfromgivingtothesubjectanundividedattention。Hepresumes,however,thatthefactswhichhehasadducedwillbefoundtoformnoinconsiderableevidenceforthetruthofhisopinionrespectingthefutureimprovementofmankind。AstheAuthorcontemplatesthisopinionatpresent,littlemoreappearstohimtobenecessarythanaplainstatement,inadditiontothemostcursoryviewofsociety,toestablishit。

  Itisanobvioustruth,whichhasbeentakennoticeofbymanywriters,thatpopulationmustalwaysbekeptdowntothelevelofthemeansofsubsistence;butnowriterthattheAuthorrecollectshasinquiredparticularlyintothemeansbywhichthisleveliseffected:anditisaviewofthesemeanswhichforms,tohismind,thestrongestobstacleinthewaytoanyverygreatfutureimprovementofsociety。Hehopesitwillappearthat,inthediscussionofthisinterestingsubject,heisactuatedsolelybyaloveoftruth,andnotbyanyprejudicesagainstanyparticularsetofmen,orofopinions。Heprofessestohavereadsomeofthespeculationsonthefutureimprovementofsocietyinatemperverydifferentfromawishtofindthemvisionary,buthehasnotacquiredthatcommandoverhisunderstandingwhichwouldenablehimtobelievewhathewishes,withoutevidence,ortorefusehisassenttowhatmightbeunpleasing,whenaccompaniedwithevidence。

  Theviewwhichhehasgivenofhumanlifehasamelancholyhue,buthefeelsconsciousthathehasdrawnthesedarktintsfromaconvictionthattheyarereallyinthepicture,andnotfromajaundicedeyeoraninherentspleenofdisposition。Thetheoryofmindwhichhehassketchedinthetwolastchaptersaccountstohisownunderstandinginasatisfactorymannerfortheexistenceofmostoftheevilsoflife,butwhetheritwillhavethesameeffectuponothersmustbelefttothejudgementofhisreaders。

  Ifheshouldsucceedindrawingtheattentionofmoreablementowhatheconceivestobetheprincipaldifficultyinthewaytotheimprovementofsocietyandshould,inconsequence,seethisdifficultyremoved,evenintheory,hewillgladlyretracthispresentopinionsandrejoiceinaconvictionofhiserror。

  7June1798

  CHAPTER1

  Questionstated—Littleprospectofadeterminationofit,fromtheenmityoftheopposingparties—Theprincipalargumentagainsttheperfectibilityofmanandofsocietyhasneverbeenfairlyanswered—Natureofthedifficultyarisingfrompopulation—OutlineoftheprincipalargumentoftheEssayTHEgreatandunlookedfordiscoveriesthathavetakenplaceoflateyearsinnaturalphilosophy,theincreasingdiffusionofgeneralknowledgefromtheextensionoftheartofprinting,theardentandunshackledspiritofinquirythatprevailsthroughouttheletteredandevenunletteredworld,thenewandextraordinarylightsthathavebeenthrownonpoliticalsubjectswhichdazzleandastonishtheunderstanding,andparticularlythattremendousphenomenoninthepoliticalhorizon,theFrenchRevolution,which,likeablazingcomet,seemsdestinedeithertoinspirewithfreshlifeandvigour,ortoscorchupanddestroytheshrinkinginhabitantsoftheearth,haveallconcurredtoleadmanyablemenintotheopinionthatweweretouchingonaperiodbigwiththemostimportantchanges,changesthatwouldinsomemeasurebedecisiveofthefuturefateofmankind。

  Ithasbeensaidthatthegreatquestionisnowatissue,whethermanshallhenceforthstartforwardswithacceleratedvelocitytowardsillimitable,andhithertounconceivedimprovement,orbecondemnedtoaperpetualoscillationbetweenhappinessandmisery,andaftereveryeffortremainstillatanimmeasurabledistancefromthewished—forgoal。

  Yet,anxiouslyaseveryfriendofmankindmustlookforwardstotheterminationofthispainfulsuspense,andeagerlyastheinquiringmindwouldhaileveryrayoflightthatmightassistitsviewintofuturity,itismuchtobelamentedthatthewritersoneachsideofthismomentousquestionstillkeepfaralooffromeachother。Theirmutualargumentsdonotmeetwithacandidexamination。Thequestionisnotbroughttorestonfewerpoints,andevenintheoryscarcelyseemstobeapproachingtoadecision。

  Theadvocateforthepresentorderofthingsisapttotreatthesectofspeculativephilosopherseitherasasetofartfulanddesigningknaveswhopreachupardentbenevolenceanddrawcaptivatingpicturesofahappierstateofsocietyonlythebettertoenablethemtodestroythepresentestablishmentsandtoforwardtheirowndeep—laidschemesofambition,oraswildandmad—headedenthusiastswhosesillyspeculationsandabsurdparadoxesarenotworthytheattentionofanyreasonableman。

  Theadvocatefortheperfectibilityofman,andofsociety,retortsonthedefenderofestablishmentsamorethanequalcontempt。Hebrandshimastheslaveofthemostmiserableandnarrowprejudices;orasthedefenderoftheabuses。ofcivilsocietyonlybecauseheprofitsbythem。Hepaintshimeitherasacharacterwhoprostituteshisunderstandingtohisinterest,orasonewhosepowersofmindarenotofasizetograspanythinggreatandnoble,whocannotseeabovefiveyardsbeforehim,andwhomustthereforebeutterlyunabletotakeintheviewsoftheenlightenedbenefactorofmankind。

  Inthisunamicablecontestthecauseoftruthcannotbutsuffer。Thereallygoodargumentsoneachsideofthequestionarenotallowedtohavetheirproperweight。Eachpursueshisowntheory,littlesolicitoustocorrectorimproveitbyanattentiontowhatisadvancedbyhisopponents。

  Thefriendofthepresentorderofthingscondemnsallpoliticalspeculationsinthegross。Hewillnotevencondescendtoexaminethegroundsfromwhichtheperfectibilityofsocietyisinferred。Muchlesswillhegivehimselfthetroubleinafairandcandidmannertoattemptanexpositionoftheirfallacy。

  Thespeculativephilosopherequallyoffendsagainstthecauseoftruth。Witheyesfixedonahappierstateofsociety,theblessingsofwhichhepaintsinthemostcaptivatingcolours,heallowshimselftoindulgeinthemostbitterinvectivesagainsteverypresentestablishment,withoutapplyinghistalentstoconsiderthebestandsafestmeansofremovingabusesandwithoutseemingtobeawareofthetremendousobstaclesthatthreaten,evenintheory,toopposetheprogressofmantowardsperfection。

  Itisanacknowledgedtruthinphilosophythatajusttheorywillalwaysbeconfirmedbyexperiment。Yetsomuchfriction,andsomanyminutecircumstancesoccurinpractice,whichitisnexttoimpossibleforthemostenlargedandpenetratingmindtoforesee,thatonfewsubjectscananytheorybepronouncedjust,tillalltheargumentsagainstithavebeenmaturelyweighedandclearlyandconsistentlyrefuted。

  Ihavereadsomeofthespeculationsontheperfectibilityofmanandofsocietywithgreatpleasure。Ihavebeenwarmedanddelightedwiththeenchantingpicturewhichtheyholdforth。I

  ardentlywishforsuchhappyimprovements。ButIseegreat,and,tomyunderstanding,unconquerabledifficultiesinthewaytothem。Thesedifficultiesitismypresentpurposetostate,declaring,atthesametime,thatsofarfromexultinginthem,asacauseoftriumphoverthefriendsofinnovation,nothingwouldgivemegreaterpleasurethantoseethemcompletelyremoved。

  ThemostimportantargumentthatIshalladduceiscertainlynotnew。TheprinciplesonwhichitdependshavebeenexplainedinpartbyHume,andmoreatlargebyDrAdamSmith。Ithasbeenadvancedandappliedtothepresentsubject,thoughnotwithitsproperweight,orinthemostforciblepointofview,byMrWallace,anditmayprobablyhavebeenstatedbymanywritersthatIhavenevermetwith。Ishouldcertainlythereforenotthinkofadvancingitagain,thoughImeantoplaceitinapointofviewinsomedegreedifferentfromanythatIhavehithertoseen,ifithadeverbeenfairlyandsatisfactorilyanswered。

  Thecauseofthisneglectonthepartoftheadvocatesfortheperfectibilityofmankindisnoteasilyaccountedfor。I

  cannotdoubtthetalentsofsuchmenasGodwinandCondorcet。I

  amunwillingtodoubttheircandour。Tomyunderstanding,andprobablytothatofmostothers,thedifficultyappearsinsurmountable。Yetthesemenofacknowledgedabilityandpenetrationscarcelydeigntonoticeit,andholdontheircourseinsuchspeculationswithunabatedardourandundiminishedconfidence。Ihavecertainlynorighttosaythattheypurposelyshuttheireyestosucharguments。Ioughtrathertodoubtthevalidityofthem,whenneglectedbysuchmen,howeverforciblytheirtruthmaystrikemyownmind。Yetinthisrespectitmustbeacknowledgedthatweareallofustoopronetoerr。IfIsawaglassofwinerepeatedlypresentedtoaman,andhetooknonoticeofit,Ishouldbeapttothinkthathewasblindoruncivil。AjusterphilosophymightteachmerathertothinkthatmyeyesdeceivedmeandthattheofferwasnotreallywhatI

  conceivedittobe。

  InenteringupontheargumentImustpremisethatIputoutofthequestion,atpresent,allmereconjectures,thatis,allsuppositions,theprobablerealizationofwhichcannotbeinferreduponanyjustphilosophicalgrounds。Awritermaytellmethathethinksmanwillultimatelybecomeanostrich。Icannotproperlycontradicthim。Butbeforehecanexpecttobringanyreasonablepersonovertohisopinion,heoughttoshewthatthenecksofmankindhavebeengraduallyelongating,thatthelipshavegrownharderandmoreprominent,thatthelegsandfeetaredailyalteringtheirshape,andthatthehairisbeginningtochangeintostubsoffeathers。Andtilltheprobabilityofsowonderfulaconversioncanbeshewn,itissurelylosttimeandlosteloquencetoexpatiateonthehappinessofmaninsuchastate;todescribehispowers,bothofrunningandflying,topainthiminaconditionwhereallnarrowluxurieswouldbecontemned,wherehewouldbeemployedonlyincollectingthenecessariesoflife,andwhere,consequently,eachman’sshareoflabourwouldbelight,andhisportionofleisureample。

  IthinkImayfairlymaketwopostulata。

  First,Thatfoodisnecessarytotheexistenceofman。

  Secondly,Thatthepassionbetweenthesexesisnecessaryandwillremainnearlyinitspresentstate。

  Thesetwolaws,eversincewehavehadanyknowledgeofmankind,appeartohavebeenfixedlawsofournature,and,aswehavenothithertoseenanyalterationinthem,wehavenorighttoconcludethattheywilleverceasetobewhattheynoware,withoutanimmediateactofpowerinthatBeingwhofirstarrangedthesystemoftheuniverse,andfortheadvantageofhiscreatures,stillexecutes,accordingtofixedlaws,allitsvariousoperations。

  Idonotknowthatanywriterhassupposedthatonthisearthmanwillultimatelybeabletolivewithoutfood。ButMrGodwinhasconjecturedthatthepassionbetweenthesexesmayintimebeextinguished。As,however,hecallsthispartofhisworkadeviationintothelandofconjecture,Iwillnotdwelllongeruponitatpresentthantosaythatthebestargumentsfortheperfectibilityofmanaredrawnfromacontemplationofthegreatprogressthathehasalreadymadefromthesavagestateandthedifficultyofsayingwhereheistostop。Buttowardstheextinctionofthepassionbetweenthesexes,noprogresswhateverhashithertobeenmade。Itappearstoexistinasmuchforceatpresentasitdidtwothousandorfourthousandyearsago。Thereareindividualexceptionsnowastherealwayshavebeen。But,astheseexceptionsdonotappeartoincreaseinnumber,itwouldsurelybeaveryunphilosophicalmodeofarguingtoinfer,merelyfromtheexistenceofanexception,thattheexceptionwould,intime,becometherule,andtheruletheexception。

  Assumingthenmypostulataasgranted,Isay,thatthepowerofpopulationisindefinitelygreaterthanthepowerintheearthtoproducesubsistenceforman。

  Population,whenunchecked,increasesinageometricalratio。

  Subsistenceincreasesonlyinanarithmeticalratio。Aslightacquaintancewithnumberswillshewtheimmensityofthefirstpowerincomparisonofthesecond。

  Bythatlawofournaturewhichmakesfoodnecessarytothelifeofman,theeffectsofthesetwounequalpowersmustbekeptequal。

  Thisimpliesastrongandconstantlyoperatingcheckonpopulationfromthedifficultyofsubsistence。Thisdifficultymustfallsomewhereandmustnecessarilybeseverelyfeltbyalargeportionofmankind。

  Throughtheanimalandvegetablekingdoms,naturehasscatteredtheseedsoflifeabroadwiththemostprofuseandliberalhand。Shehasbeencomparativelysparingintheroomandthenourishmentnecessarytorearthem。Thegermsofexistencecontainedinthisspotofearth,withamplefood,andampleroomtoexpandin,wouldfillmillionsofworldsinthecourseofafewthousandyears。Necessity,thatimperiousallpervadinglawofnature,restrainsthemwithintheprescribedbounds。Theraceofplantsandtheraceofanimalsshrinkunderthisgreatrestrictivelaw。Andtheraceofmancannot,byanyeffortsofreason,escapefromit。Amongplantsandanimalsitseffectsarewasteofseed,sickness,andprematuredeath。Amongmankind,miseryandvice。Theformer,misery,isanabsolutelynecessaryconsequenceofit。Viceisahighlyprobableconsequence,andwethereforeseeitabundantlyprevail,butitoughtnot,perhaps,tobecalledanabsolutelynecessaryconsequence。Theordealofvirtueistoresistalltemptationtoevil。

  Thisnaturalinequalityofthetwopowersofpopulationandofproductionintheearth,andthatgreatlawofournaturewhichmustconstantlykeeptheireffectsequal,formthegreatdifficultythattomeappearsinsurmountableinthewaytotheperfectibilityofsociety。Allotherargumentsareofslightandsubordinateconsiderationincomparisonofthis。Iseenowaybywhichmancanescapefromtheweightofthislawwhichpervadesallanimatednature。Nofanciedequality,noagrarianregulationsintheirutmostextent,couldremovethepressureofitevenforasinglecentury。Anditappears,therefore,tobedecisiveagainstthepossibleexistenceofasociety,allthemembersofwhichshouldliveinease,happiness,andcomparativeleisure;

  andfeelnoanxietyaboutprovidingthemeansofsubsistenceforthemselvesandfamilies。

  Consequently,ifthepremisesarejust,theargumentisconclusiveagainsttheperfectibilityofthemassofmankind。

  Ihavethussketchedthegeneraloutlineoftheargument,butIwillexamineitmoreparticularly,andIthinkitwillbefoundthatexperience,thetruesourceandfoundationofallknowledge,invariablyconfirmsitstruth。

  CHAPTER2

  Thedifferentratioinwhichpopulationandfoodincrease—Thenecessaryeffectsofthesedifferentratiosofincrease—

  Oscillationproducedbythemintheconditionofthelowerclassesofsociety—Reasonswhythisoscillationhasnotbeensomuchobservedasmightbeexpected—ThreepropositionsonwhichthegeneralargumentoftheEssaydepends——Thedifferentstatesinwhichmankindhavebeenknowntoexistproposedtobeexaminedwithreferencetothesethreepropositions。

  ISAIDthatpopulation,whenunchecked,increasedinageometricalratio,andsubsistenceformaninanarithmeticalratio。

  Letusexaminewhetherthispositionbejust。Ithinkitwillbeallowed,thatnostatehashithertoexisted(atleastthatwehaveanyaccountof)wherethemannersweresopureandsimple,andthemeansofsubsistencesoabundant,thatnocheckwhateverhasexistedtoearlymarriages,amongthelowerclasses,fromafearofnotprovidingwellfortheirfamilies,oramongthehigherclasses,fromafearofloweringtheirconditioninlife。

  Consequentlyinnostatethatwehaveyetknownhasthepowerofpopulationbeenlefttoexertitselfwithperfectfreedom。

  Whetherthelawofmarriagebeinstitutedornot,thedictateofnatureandvirtueseemstobeanearlyattachmenttoonewoman。Supposingalibertyofchanginginthecaseofanunfortunatechoice,thislibertywouldnotaffectpopulationtillitarosetoaheightgreatlyvicious;andwearenowsupposingtheexistenceofasocietywhereviceisscarcelyknown。

  Inastatethereforeofgreatequalityandvirtue,wherepureandsimplemannersprevailed,andwherethemeansofsubsistenceweresoabundantthatnopartofthesocietycouldhaveanyfearsaboutprovidingamplyforafamily,thepowerofpopulationbeinglefttoexertitselfunchecked,theincreaseofthehumanspecieswouldevidentlybemuchgreaterthananyincreasethathasbeenhithertoknown。

  IntheUnitedStatesofAmerica,wherethemeansofsubsistencehavebeenmoreample,themannersofthepeoplemorepure,andconsequentlythecheckstoearlymarriagesfewer,thaninanyofthemodernstatesofEurope,thepopulationhasbeenfoundtodoubleitselfintwenty—fiveyears。

  Thisratioofincrease,thoughshortoftheutmostpowerofpopulation,yetastheresultofactualexperience,wewilltakeasourrule,andsay,thatpopulation,whenunchecked,goesondoublingitselfeverytwenty—fiveyearsorincreasesinageometricalratio。

  Letusnowtakeanyspotofearth,thisIslandforinstance,andseeinwhatratiothesubsistenceitaffordscanbesupposedtoincrease。Wewillbeginwithitunderitspresentstateofcultivation。

  IfIallowthatbythebestpossiblepolicy,bybreakingupmorelandandbygreatencouragementstoagriculture,theproduceofthisIslandmaybedoubledinthefirsttwenty—fiveyears,I

  thinkitwillbeallowingasmuchasanypersoncanwelldemand。

  Inthenexttwenty—fiveyears,itisimpossibletosupposethattheproducecouldbequadrupled。Itwouldbecontrarytoallourknowledgeofthequalitiesofland。Theveryutmostthatwecanconceive,is,thattheincreaseinthesecondtwenty—fiveyearsmightequalthepresentproduce。Letusthentakethisforourrule,thoughcertainlyfarbeyondthetruth,andallowthat,bygreatexertion,thewholeproduceoftheIslandmightbeincreasedeverytwenty—fiveyears,byaquantityofsubsistenceequaltowhatitatpresentproduces。Themostenthusiasticspeculatorcannotsupposeagreaterincreasethanthis。InafewcenturiesitwouldmakeeveryacreoflandintheIslandlikeagarden。

  Yetthisratioofincreaseisevidentlyarithmetical。

  Itmaybefairlysaid,therefore,thatthemeansofsubsistenceincreaseinanarithmeticalratio。Letusnowbringtheeffectsofthesetworatiostogether。

  ThepopulationoftheIslandiscomputedtobeaboutsevenmillions,andwewillsupposethepresentproduceequaltothesupportofsuchanumber。Inthefirsttwenty—fiveyearsthepopulationwouldbefourteenmillions,andthefoodbeingalsodoubled,themeansofsubsistencewouldbeequaltothisincrease。Inthenexttwenty—fiveyearsthepopulationwouldbetwenty—eightmillions,andthemeansofsubsistenceonlyequaltothesupportoftwenty—onemillions。Inthenextperiod,thepopulationwouldbefifty—sixmillions,andthemeansofsubsistencejustsufficientforhalfthatnumber。Andattheconclusionofthefirstcenturythepopulationwouldbeonehundredandtwelvemillionsandthemeansofsubsistenceonlyequaltothesupportofthirty—fivemillions,whichwouldleaveapopulationofseventy—sevenmillionstotallyunprovidedfor。

  Agreatemigrationnecessarilyimpliesunhappinessofsomekindorotherinthecountrythatisdeserted。Forfewpersonswillleavetheirfamilies,connections,friends,andnativeland,toseekasettlementinuntriedforeignclimes,withoutsomestrongsubsistingcausesofuneasinesswheretheyare,orthehopeofsomegreatadvantagesintheplacetowhichtheyaregoing。

  Buttomaketheargumentmoregeneralandlessinterruptedbythepartialviewsofemigration,letustakethewholeearth,insteadofonespot,andsupposethattherestraintstopopulationwereuniversallyremoved。Ifthesubsistenceformanthattheearthaffordswastobeincreasedeverytwenty—fiveyearsbyaquantityequaltowhatthewholeworldatpresentproduces,thiswouldallowthepowerofproductionintheearthtobeabsolutelyunlimited,anditsratioofincreasemuchgreaterthanwecanconceivethatanypossibleexertionsofmankindcouldmakeit。

  Takingthepopulationoftheworldatanynumber,athousandmillions,forinstance,thehumanspecieswouldincreaseintheratioof——1,2,4,8,16,32,64,128,256,512,etc。andsubsistenceas——1,2,3,4,5,6,7,8,9,10,etc。Intwocenturiesandaquarter,thepopulationwouldbetothemeansofsubsistenceas512to10:inthreecenturiesas4096to13,andintwothousandyearsthedifferencewouldbealmostincalculable,thoughtheproduceinthattimewouldhaveincreasedtoanimmenseextent。

  Nolimitswhateverareplacedtotheproductionsoftheearth;theymayincreaseforeverandbegreaterthananyassignablequantity。yetstillthepowerofpopulationbeingapowerofasuperiororder,theincreaseofthehumanspeciescanonlybekeptcommensuratetotheincreaseofthemeansofsubsistencebytheconstantoperationofthestronglawofnecessityactingasacheckuponthegreaterpower。

  Theeffectsofthischeckremainnowtobeconsidered。

  Amongplantsandanimalstheviewofthesubjectissimple。

  Theyareallimpelledbyapowerfulinstincttotheincreaseoftheirspecies,andthisinstinctisinterruptedbynoreasoningordoubtsaboutprovidingfortheiroffspring。Whereverthereforethereisliberty,thepowerofincreaseisexerted,andthesuperabundanteffectsarerepressedafterwardsbywantofroomandnourishment,whichiscommontoanimalsandplants,andamonganimalsbybecomingthepreyofothers。

  Theeffectsofthischeckonmanaremorecomplicated。

  Impelledtotheincreaseofhisspeciesbyanequallypowerfulinstinct,reasoninterruptshiscareerandaskshimwhetherhemaynotbringbeingsintotheworldforwhomhecannotprovidethemeansofsubsistence。Inastateofequality,thiswouldbethesimplequestion。Inthepresentstateofsociety,otherconsiderationsoccur。Willhenotlowerhisrankinlife?Willhenotsubjecthimselftogreaterdifficultiesthanheatpresentfeels?Willhenotbeobligedtolabourharder?andifhehasalargefamily,willhisutmostexertionsenablehimtosupportthem?Mayhenotseehisoffspringinragsandmisery,andclamouringforbreadthathecannotgivethem?Andmayhenotbereducedtothegratingnecessityofforfeitinghisindependence,andofbeingobligedtothesparinghandofcharityforsupport?

  Theseconsiderationsarecalculatedtoprevent,andcertainlydoprevent,averygreatnumberinallcivilizednationsfrompursuingthedictateofnatureinanearlyattachmenttoonewoman。Andthisrestraintalmostnecessarily,thoughnotabsolutelyso,producesvice。Yetinallsocieties,eventhosethataremostvicious,thetendencytoavirtuousattachmentissostrongthatthereisaconstantefforttowardsanincreaseofpopulation。Thisconstanteffortasconstantlytendstosubjectthelowerclassesofthesocietytodistressandtopreventanygreatpermanentameliorationoftheircondition。

  Thewayinwhich,theseeffectsareproducedseemstobethis。Wewillsupposethemeansofsubsistenceinanycountryjustequaltotheeasysupportofitsinhabitants。Theconstantefforttowardspopulation,whichisfoundtoacteveninthemostvicioussocieties,increasesthenumberofpeoplebeforethemeansofsubsistenceareincreased。Thefoodthereforewhichbeforesupportedsevenmillionsmustnowbedividedamongsevenmillionsandahalforeightmillions。Thepoorconsequentlymustlivemuchworse,andmanyofthembereducedtoseveredistress。

  Thenumberoflabourersalsobeingabovetheproportionoftheworkinthemarket,thepriceoflabourmusttendtowardadecrease,whilethepriceofprovisionswouldatthesametimetendtorise。Thelabourerthereforemustworkhardertoearnthesameashedidbefore。Duringthisseasonofdistress,thediscouragementstomarriage,andthedifficultyofrearingafamilyaresogreatthatpopulationisatastand。Inthemeantimethecheapnessoflabour,theplentyoflabourers,andthenecessityofanincreasedindustryamongstthem,encouragecultivatorstoemploymorelabourupontheirland,toturnupfreshsoil,andtomanureandimprovemorecompletelywhatisalreadyintillage,tillultimatelythemeansofsubsistencebecomeinthesameproportiontothepopulationasattheperiodfromwhichwesetout。Thesituationofthelabourerbeingthenagaintolerablycomfortable,therestraintstopopulationareinsomedegreeloosened,andthesameretrogradeandprogressivemovementswithrespecttohappinessarerepeated。

  Thissortofoscillationwillnotberemarkedbysuperficialobservers,anditmaybedifficultevenforthemostpenetratingmindtocalculateitsperiods。Yetthatinalloldstatessomesuchvibrationdoesexist,thoughfromvarioustransversecauses,inamuchlessmarked,andinamuchmoreirregularmannerthanI

  havedescribedit,noreflectingmanwhoconsidersthesubjectdeeplycanwelldoubt。

  Manyreasonsoccurwhythisoscillationhasbeenlessobvious,andlessdecidedlyconfirmedbyexperience,thanmightnaturallybeexpected。

  Oneprincipalreasonisthatthehistoriesofmankindthatwepossessarehistoriesonlyofthehigherclasses。Wehavebutfewaccountsthatcanbedependeduponofthemannersandcustomsofthatpartofmankindwheretheseretrogradeandprogressivemovementschieflytakeplace。Asatisfactoryhistoryofthiskind,ononepeople,andofoneperiod,wouldrequiretheconstantandminuteattentionofanobservingmindduringalonglife。Someoftheobjectsofinquirywouldbe,inwhatproportiontothenumberofadultswasthenumberofmarriages,towhatextentviciouscustomsprevailedinconsequenceoftherestraintsuponmatrimony,whatwasthecomparativemortalityamongthechildrenofthemostdistressedpartofthecommunityandthosewholivedrathermoreattheirease,whatwerethevariationsintherealpriceoflabour,andwhatweretheobservabledifferencesinthestateofthelowerclassesofsocietywithrespecttoeaseandhappiness,atdifferenttimesduringacertainperiod。

  Suchahistorywouldtendgreatlytoelucidatethemannerinwhichtheconstantcheckuponpopulationactsandwouldprobablyprovetheexistenceoftheretrogradeandprogressivemovementsthathavebeenmentioned,thoughthetimesoftheirvibrationsmustnecessarilyberenderedirregularfromtheoperationofmanyinterruptingcauses,suchastheintroductionorfailureofcertainmanufactures,agreaterorlessprevalentspiritofagriculturalenterprise,yearsofplenty,oryearsofscarcity,warsandpestilence,poorlaws,theinventionofprocessesforshorteninglabourwithouttheproportionalextensionofthemarketforthecommodity,and,particularly,thedifferencebetweenthenominalandrealpriceoflabour,acircumstancewhichhasperhapsmorethananyothercontributedtoconcealthisoscillationfromcommonview。

  Itveryrarelyhappensthatthenominalpriceoflabouruniversallyfalls,butwewellknowthatitfrequentlyremainsthesame,whilethenominalpriceofprovisionshasbeengraduallyincreasing。Thisis,ineffect,arealfallinthepriceoflabour,andduringthisperiodtheconditionofthelowerordersofthecommunitymustgraduallygrowworseandworse。Butthefarmersandcapitalistsaregrowingrichfromtherealcheapnessoflabour。Theirincreasedcapitalsenablethemtoemployagreaternumberofmen。Workthereforemaybeplentiful,andthepriceoflabourwouldconsequentlyrise。Butthewantoffreedominthemarketoflabour,whichoccursmoreorlessinallcommunities,eitherfromparishlaws,orthemoregeneralcauseofthefacilityofcombinationamongtherich,anditsdifficultyamongthepoor,operatestopreventthepriceoflabourfromrisingatthenaturalperiod,andkeepsitdownsometimelonger;

  perhapstillayearofscarcity,whentheclamouristooloudandthenecessitytooapparenttoberesisted。

  Thetruecauseoftheadvanceinthepriceoflabouristhusconcealed,andtherichaffecttograntitasanactofcompassionandfavourtothepoor,inconsiderationofayearofscarcity,and,whenplentyreturns,indulgethemselvesinthemostunreasonableofallcomplaints,thatthepricedoesnotagainfall,whenalittlerejectionwouldshewthemthatitmusthaverisenlongbeforebutfromanunjustconspiracyoftheirown。

  Butthoughtherichbyunfaircombinationscontributefrequentlytoprolongaseasonofdistressamongthepoor,yetnopossibleformofsocietycouldpreventthealmostconstantactionofmiseryuponagreatpartofmankind,ifinastateofinequality,anduponall,ifallwereequal。

  ThetheoryonwhichthetruthofthispositiondependsappearstomesoextremelyclearthatIfeelatalosstoconjecturewhatpartofitcanbedenied。

  Thatpopulationcannotincreasewithoutthemeansofsubsistenceisapropositionsoevidentthatitneedsnoillustration。

  Thatpopulationdoesinvariablyincreasewheretherearethemeansofsubsistence,thehistoryofeverypeoplethathaveeverexistedwillabundantlyprove。

  Andthatthesuperiorpowerofpopulationcannotbecheckedwithoutproducingmiseryorvice,theampleportionofthesetoobitteringredientsinthecupofhumanlifeandthecontinuanceofthe。physicalcausesthatseemtohaveproducedthembeartooconvincingatestimony。

  But,inordermorefullytoascertainthevalidityofthesethreepropositions,letusexaminethedifferentstatesinwhichmankindhavebeenknowntoexist。Evenacursoryreviewwill,I

  think,besufficienttoconvinceusthatthesepropositionsareincontrovertibletruths。

  CHAPTER3

  Thesavageorhunterstateshortlyreviewed—Theshepherdstate,orthetribesofbarbariansthatoverrantheRomanEmpire—Thesuperiorityofthepowerofpopulationtothemeansofsubsistence—thecauseofthegreattideofNorthernEmigration。

  INtherudeststateofmankind,inwhichhuntingistheprincipaloccupation,andtheonlymodeofacquiringfood,themeansofsubsistencebeingscatteredoveralargeextentofterritory,thecomparativepopulationmustnecessarilybethin。ItissaidthatthepassionbetweenthesexesislessardentamongtheNorthAmericanIndiansthanamonganyotherraceofmen。Yet,notwithstandingthisapathy,theefforttowardspopulation,eveninthispeople,seemstobealwaysgreaterthanthemeanstosupportit。Thisappearsfromthecomparativelyrapidpopulationthattakesplacewheneveranyofthetribeshappentosettleinsomefertilespotandtodrawnourishmentfrommorefruitfulsourcesthanthatofhunting,andithasbeenfrequentlyremarkedthatwhenanIndianfamilyhastakenupitsabodenearanyEuropeansettlementandadoptedamoreeasyandcivilizedmodeoflife,thatonewomanhasrearedfive,orsix,ormorechildren,thoughinthesavagestateitrarelyhappensthataboveoneortwoinafamilygrowuptomaturity。ThesameobservationhasbeenmadewithregardtotheHottentotsneartheCape。Thesefactsprovethesuperiorpowerofpopulationtothemeansofsubsistenceinnationsofhunters,andthatthispoweralwaysshewsitselfthemomentitislefttoactwithfreedom。

  Itremainstoinquirewhetherthispowercanbechecked,anditseffectskeptequaltothemeansofsubsistence,withoutviceormisery。

  TheNorthAmericanIndians,consideredasapeople,cannotjustlybecalledfreeandequal。Inalltheaccountswehaveofthem,and,indeed,ofmostothersavagenations,thewomenarerepresentedasmuchmorecompletelyinastateofslaverytothementhanthepooraretotherichincivilizedcountries。OnehalfthenationappearstoactasHelotstotheotherhalf,andthemiserythatcheckspopulationfallschiefly,asitalwaysmustdo,uponthatpartwhoseconditionislowestinthescaleofsociety。Theinfancyofmaninthesimpleststaterequiresconsiderableattention,butthisnecessaryattentionthewomencannotgive,condemnedastheyaretotheinconveniencesandhardshipsoffrequentchangeofplaceandtotheconstantandunremittingdrudgeryofpreparingeverythingforthereceptionoftheirtyranniclords。Theseexertions,sometimesduringpregnancyorwithchildrenattheirbacks,mustoccasionfrequentmiscarriages,andpreventanybutthemostrobustinfantsfromgrowingtomaturity。Addtothesehardshipsofthewomentheconstantwarthatprevailsamongsavages,andthenecessitywhichtheyfrequentlylabourunderofexposingtheiragedandhelplessparents,andofthusviolatingthefirstfeelingsofnature,andthepicturewillnotappearveryfreefromtheblotofmisery。Inestimatingthehappinessofasavagenation,wemustnotfixoureyesonlyonthewarriorintheprimeoflife:heisoneofahundred:heisthegentleman,themanoffortune,thechanceshavebeeninhisfavourandmanyeffortshavefailederethisfortunatebeingwasproduced,whoseguardiangeniusshouldpreservehimthroughthenumberlessdangerswithwhichhewouldbesurroundedfrominfancytomanhood。Thetruepointsofcomparisonbetweentwonationsseemtobetheranksineachwhichappearnearesttoanswertoeachother。Andinthisview,I

  shouldcomparethewarriorsintheprimeoflifewiththegentlemen,andthewomen,children,andaged,withthelowerclassesofthecommunityincivilizedstates。

  Maywenotthenfairlyinferfromthisshortreview,orrather,fromtheaccountsthatmaybereferredtoofnationsofhunters,thattheirpopulationisthinfromthescarcityoffood,thatitwouldimmediatelyincreaseiffoodwasingreaterplenty,andthat,puttingviceoutofthequestionamongsavages,miseryisthecheckthatrepressesthesuperiorpowerofpopulationandkeepsitseffectsequaltothemeansofsubsistence。Actualobservationandexperiencetellusthatthischeck,withafewlocalandtemporaryexceptions,isconstantlyactingnowuponallsavagenations,andthetheoryindicatesthatitprobablyactedwithnearlyequalstrengthathousandyearsago,anditmaynotbemuchgreaterathousandyearshence。

  Ofthemannersandhabitsthatprevailamongnationsofshepherds,thenextstateofmankind,weareevenmoreignorantthanofthesavagestate。Butthatthesenationscouldnotescapethegenerallotofmiseryarisingfromthewantofsubsistence,Europe,andallthefairestcountriesintheworld,bearampletestimony。WantwasthegoadthatdrovetheScythianshepherdsfromtheirnativehaunts,likesomanyfamishedwolvesinsearchofprey。Setinmotionbythisallpowerfulcause,cloudsofBarbariansseemedtocollectfromallpointsofthenorthernhemisphere。Gatheringfreshdarknessandterrorastheyrolledon,thecongregatedbodiesatlengthobscuredthesunofitalyandsunkthewholeworldinuniversalnight。Thesetremendouseffects,solongandsodeeplyfeltthroughoutthefairestportionsoftheearth,maybetracedtothesimplecauseofthesuperiorpowerofpopulationtothemeansofsubsistence。

  Itiswellknownthatacountryinpasturecannotsupportsomanyinhabitantsasacountryintillage,butwhatrendersnationsofshepherdssoformidableisthepowerwhichtheypossessofmovingalltogetherandthenecessitytheyfrequentlyfeelofexertingthispowerinsearchoffreshpasturefortheirherds。Atribethatwasrichincattlehadanimmediateplentyoffood。Eventheparentstockmightbedevouredinacaseofabsolutenecessity。Thewomenlivedingreatereasethanamongnationsofhunters。Themenboldintheirunitedstrengthandconfidingintheirpowerofprocuringpasturefortheircattlebychangeofplace,felt,probably,butfewfearsaboutprovidingforafamily。Thesecombinedcausessoonproducedtheirnaturalandinvariableeffect,anextendedpopulation。Amorefrequentandrapidchangeofplacebecamethennecessary。Awiderandmoreextensiveterritorywassuccessivelyoccupied。Abroaderdesolationextendedallaroundthem。Wantpinchedthelessfortunatemembersofthesociety,and,atlength,theimpossibilityofsupportingsuchanumbertogetherbecametooevidenttoberesisted。Youngscionswerethenpushedoutfromtheparent—stockandinstructedtoexplorefreshregionsandtogainhappierseatsforthemselvesbytheirswords。’Theworldwasallbeforethemwheretochoose。’Restlessfrompresentdistress,flushedwiththehopeoffairerprospects,andanimatedwiththespiritofhardyenterprise,thesedaringadventurerswerelikelytobecomeformidableadversariestoallwhoopposedthem。Thepeacefulinhabitantsofthecountriesonwhichtheyrushedcouldnotlongwithstandtheenergyofmenactingundersuchpowerfulmotivesofexertion。Andwhentheyfellinwithanytribesliketheirown,thecontestwasastruggleforexistence,andtheyfoughtwithadesperatecourage,inspiredbythereJectionthatdeathwasthepunishmentofdefeatandlifetheprizeofvictory。

  Inthesesavagecontestsmanytribesmusthavebeenutterlyexterminated。Some,probably,perishedbyhardshipandfamine。

  Others,whoseleadingstarhadgiventhemahappierdirection,becamegreatandpowerfultribes,and,intheirturns,sentofffreshadventurersinsearchofstillmorefertileseats。Theprodigiouswasteofhumanlifeoccasionedbythisperpetualstruggleforroomandfoodwasmorethansuppliedbythemightypowerofpopulation,acting,insomedegree,unshackledfromtheconsenthabitofemigration。ThetribesthatmigratedtowardstheSouth,thoughtheywonthesemorefruitfulregionsbycontinualbattles,rapidlyincreasedinnumberandpower,fromtheincreasedmeansofsubsistence。Tillatlengththewholeterritory,fromtheconfinesofChinatotheshoresoftheBaltic,waspeopledbyavariousraceofBarbarians,brave,robust,andenterprising,inuredtohardship,anddelightinginwar。Sometribesmaintainedtheirindependence。Othersrangedthemselvesunderthestandardofsomebarbaricchieftainwholedthemtovictoryaftervictory,andwhatwasofmoreimportance,toregionsaboundingincorn,wine,andoil,thelongwishedforconsummation,andgreatrewardoftheirlabours。AnAlaric,anAttila,oraZingisKhan,andthechiefsaroundthem,mightfightforglory,forthefameofextensiveconquests,butthetruecausethatsetinmotionthegreattideofnorthernemigration,andthatcontinuedtopropelittillitrolledatdifferentperiodsagainstChina,Persia,italy,andevenEgypt,wasascarcityoffood,apopulationextendedbeyondthemeansofsupportingit。

  Theabsolutepopulationatanyoneperiod,inproportiontotheextentofterritory,couldneverbegreat,onaccountoftheunproductivenatureofsomeoftheregionsoccupied;butthereappearstohavebeenamostrapidsuccessionofhumanbeings,andasfastassomeweremoweddownbythescytheofwaroroffamine,othersroseinincreasednumberstosupplytheirplace。

  AmongtheseboldandimprovidentBarbarians,populationwasprobablybutlittlechecked,asinmodernstates,fromafearoffuturedifficulties。Aprevailinghopeofbetteringtheirconditionbychangeofplace,aconstantexpectationofplunder,apowereven,ifdistressed,ofsellingtheirchildrenasslaves,addedtothenaturalcarelessnessofthebarbariccharacter,allconspiredtoraiseapopulationwhichremainedtoberepressedafterwardsbyfamineorwar。

  Wherethereisanyinequalityofconditions,andamongnationsofshepherdsthissoontakesplace,thedistressarisingfromascarcityofprovisionsmustfallhardestupontheleastfortunatemembersofthesociety。Thisdistressalsomustfrequentlyhavebeenfeltbythewomen,exposedtocasualplunderintheabsenceoftheirhusbands,andsubjecttocontinualdisappointmentsintheirexpectedreturn。

  Butwithoutknowingenoughoftheminuteandintimatehistoryofthesepeople,topointoutpreciselyonwhatpartthedistressforwantoffoodchieflyfell,andtowhatextentitwasgenerallyfelt,Ithinkwemayfairlysay,fromalltheaccountsthatwehaveofnationsofshepherds,thatpopulationinvariablyincreasedamongthemwhenever,byemigrationoranyothercause,themeansofsubsistencewereincreased,andthatafurtherpopulationwaschecked,andtheactualpopulationkeptequaltothemeansofsubsistence,bymiseryandvice。

  For,independentlyofanyviciouscustomsthatmighthaveprevailedamongstthemwithregardtowomen,whichalwaysoperateascheckstopopulation,itmustbeacknowledged,Ithink,thatthecommissionofwarisvice,andtheeffectofitmisery,andnonecandoubtthemiseryofwantoffood。

  CHAPTER4

  Stateofcivilizednations—ProbabilitythatEuropeismuchmorepopulousnowthaninthetimeofJuliusCaesar—Bestcriterionofpopulation—ProbableerrorofHumeinonethecriterionsthatheproposesasassistinginanestimateofpopulation—SlowincreaseofpopulationatpresentinmostofthestatesofEurope—Thetwoprincipalcheckstopopulation—Thefirst,orpreventivecheckexaminedwithregardtoEngland。

  INexaminingthenextstateofmankindwithrelationtothequestionbeforeus,thestateofmixedpastureandtillage,inwhichwithsomevariationintheproportionsthemostcivilizednationsmustalwaysremain,weshallbeassistedinourreviewbywhatwedailyseearoundus,byactualexperience,byfactsthatcomewithinthescopeofeveryman’sobservation。

  Notwithstandingtheexaggerationsofsomeoldhistorians,therecanremainnodoubtinthemindofanythinkingmanthatthepopulationoftheprincipalcountriesofEurope,France,England,Germany,Russia,Poland,Sweden,andDenmarkismuchgreaterthaneveritwasinformertimes。Theobviousreasonoftheseexaggerationsistheformidableaspectthatevenathinlypeoplednationmusthave,whencollectedtogetherandmovingallatonceinsearchoffreshseats。Iftothistremendousappearancebeaddedasuccessionatcertainintervalsofsimilaremigrations,weshallnotbemuch。surprisedthatthefearsofthetimidnationsoftheSouthrepresentedtheNorthasaregionabsolutelyswarmingwithhumanbeings。Anearerandjusterviewofthesubjectatpresentenablesustoseethattheinferencewasasabsurdasifamaninthiscountry,whowascontinuallymeetingontheroaddrovesofcattlefromWalesandtheNorth,wasimmediatelytoconcludethatthesecountrieswerethemostproductiveofallthepartsofthekingdom。

  ThereasonthatthegreaterpartofEuropeismorepopulousnowthanitwasinformertimes,isthattheindustryoftheinhabitantshasmadethesecountriesproduceagreaterquantityofhumansubsistence。ForIconceivethatitmaybelaiddownasapositionnottobecontroverted,that,takingasufficientextentofterritorytoincludewithinitexportationandimportation,andallowingsomevariationfortheprevalenceofluxury,oroffrugalhabits,thatpopulationconstantlybearsaregularproportiontothefoodthattheearthismadetoproduce。

  Inthecontroversyconcerningthepopulousnessofancientandmodernnations,coulditbeclearlyascertainedthattheaverageproduceofthecountriesinquestion,takenaltogether,isgreaternowthanitwasinthetimesofJuliusCaesar,thedisputewouldbeatoncedetermined。

  WhenweareassuredthatChinaisthemostfertilecountryintheworld,thatalmostallthelandisintillage,andthatagreatpartofitbearstwocropseveryyear,andfurther,thatthepeopleliveveryfrugally,wemayinferwithcertaintythatthepopulationmustbeimmense,withoutbusyingourselvesininquiriesintothemannersandhabitsofthelowerclassesandtheencouragementstoearlymarriages。Buttheseinquiriesareoftheutmostimportance,andaminutehistoryofthecustomsofthelowerChinesewouldbeofthegreatestuseinascertaininginwhatmannerthecheckstoafurtherpopulationoperate;whatarethevices,andwhatarethedistressesthatpreventanincreaseofnumbersbeyondtheabilityofthecountrytosupport。

  Hume,inhisessayonthepopulousnessofancientandmodernnations,whenheintermingles,ashesays,aninquiryconcerningcauseswiththatconcerningfacts,doesnotseemtoseewithhisusualpenetrationhowverylittlesomeofthecauseshealludestocouldenablehimtoformanyjudgementoftheactualpopulationofancientnations。Ifanyinferencecanbedrawnfromthem,perhapsitshouldbedirectlythereverseofwhatHumedraws,thoughIcertainlyoughttospeakwithgreatdiffidenceindissentingfromamanwhoofallothersonsuchsubjectswastheleastlikelytobedeceivedbyfirstappearances。IfIfindthatatacertainperiodinancienthistory,theencouragementstohaveafamilyweregreat,thatearlymarriageswereconsequentlyveryprevalent,andthatfewpersonsremainedsingle,Ishouldinferwithcertaintythatpopulationwasrapidlyincreasing,butbynomeansthatitwasthenactuallyverygreat,rather;indeed,thecontrary,thatitwasthenthinandthattherewasroomandfoodforamuchgreaternumber。Ontheotherhand,ifIfindthatatthisperiodthedifficultiesattendingafamilywereverygreat,that,consequently,fewearlymarriagestookplace,andthatagreatnumberofbothsexesremainedsingle,Iinferwithcertaintythatpopulationwasatastand,and,probably,becausetheactualpopulationwasverygreatinproportiontothefertilityofthelandandthattherewasscarcelyroomandfoodformore。Thenumberoffootmen,housemaids,andotherpersonsremainingunmarriedinmodernstates,Humeallowstoberatheranargumentagainsttheirpopulation。Ishouldratherdrawacontraryinferenceandconsideritanargumentoftheirfullness,thoughthisinferenceisnotcertain,becausetherearemanythinlyinhabitedstatesthatareyetstationaryintheirpopulation。Tospeak,therefore,correctly,perhapsitmaybesaidthatthenumberofunmarriedpersonsinproportiontothewholenumber,existingatdifferentperiods,inthesameordifferentstateswillenableustojudgewhetherpopulationattheseperiodswasincreasing,stationary,ordecreasing,butwillformnocriterionbywhichwecandeterminetheactualpopulation。

点击下载App,搜索"An Essay on the Principle of Population",免费读到尾