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TheCollectedWorksofRudolfCarnap Volume1
TheCollectedWorksofRudolfCarnap RichardCreath,GeneralEditor ArizonaStateUniversity
EDITORIALBOARD SteveAwodeyErichReck CarnegieMellonUniversityUniversityofCalifornia,Riverside
BerndBuldtAlanRichardson IndianaPurdueUniversity,FortWayneUniversityofBritishColumbia
A.W.CarusThomasRicketts
Ludwig-Maximilians-UniversitätMünchenUniversityofPittsburgh
MichaelFriedmanGeorgSchiemer StanfordUniversityUniversitätWien
GregFrost-ArnoldDirkSchlimm HobartandWilliamSmithCollegesMcGillUniversity
GottfriedGabrielSvenSchlotter Friedrich-Schiller-UniversitätJenaFriedrich-Schiller-UniversitätJena
WarrenGoldfarbThomasUebel HarvardUniversityUniversityofManchester
WolfgangKienzlerPierreWagner
Friedrich-Schiller-UniversitätJenaUniversitéParis1Panthéon-Sorbonne
HannesLeitgebSandyZabell
Ludwig-Maximilians-UniversitätMünchenNorthwesternUniversity
SebastianLutzRichardZach UppsalaUniversitetUniversityofCalgary
TheCollectedWorksof RudolfCarnap RichardCreath,GeneralEditor
Volume1:EarlyWritings Editedby A.W.Carus,MichaelFriedman, WolfgangKienzler,AlanRichardson,and SvenSchlotter
Witheditorialassistancefrom SteveAwodey,DirkSchlimm,andRichardZach
GreatClarendonStreet,Oxford,OX26DP, UnitedKingdom
OxfordUniversityPressisadepartmentoftheUniversityofOxford. ItfurtherstheUniversity’sobjectiveofexcellenceinresearch,scholarship, andeducationbypublishingworldwide.Oxfordisaregisteredtrademarkof OxfordUniversityPressintheUKandincertainothercountries
OriginalCarnaptext c theRudolfCarnapHeirs Editorialmaterial c A.W.Carus,MichaelFriedman, WolfgangKienzler,AlanRichardson,andSvenSchlotter2019
MathematicalandPhysicalBackgroundto1925a c DavidB.Malament2019
Themoralrightsoftheauthorshavebeenasserted FirstEditionpublishedin2019
Impression:1
Allrightsreserved.Nopartofthispublicationmaybereproduced,storedin aretrievalsystem,ortransmitted,inanyformorbyanymeans,withoutthe priorpermissioninwritingofOxfordUniversityPress,orasexpresslypermitted bylaw,bylicenceorundertermsagreedwiththeappropriatereprographics rightsorganization.Enquiriesconcerningreproductionoutsidethescopeofthe aboveshouldbesenttotheRightsDepartment,OxfordUniversityPress,atthe addressabove
Youmustnotcirculatethisworkinanyotherform andyoumustimposethissameconditiononanyacquirer
PublishedintheUnitedStatesofAmericabyOxfordUniversityPress 198MadisonAvenue,NewYork,NY10016,UnitedStatesofAmerica
BritishLibraryCataloguinginPublicationData Dataavailable LibraryofCongressControlNumber:2018962517
ISBN978–0–19–874840–3 Printedandboundby
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TheimageofRudolf Carnap on the jacket is repro duced by p ermission of the ArchivesofScientificPhilosophy,HillmanLibrary,UniversityofPittsburgh LinkstothirdpartywebsitesareprovidedbyOxfordingoodfaithand forinformationonly.Oxforddisclaimsanyresponsibilityforthematerials containedinanythirdpartywebsitereferencedinthiswork.
1918a
Völkerbund—Staatenbund 3 LeagueofNations—LeagueofStates
1921a
WererzwingtdieGeltungdesNaturgesetzes? 11 WhoForcesLawsofNaturetoHold?
1922a
DerRaum:EinBeitragzurWissenschaftslehre 21 Space:AContributiontotheTheoryofScience
1923a
ÜberdieAufgabederPhysikunddieAnwendungdes GrundsatzesderEinfachstheit 209 OntheTaskofPhysicsandtheApplicationofthePrincipleof MaximalSimplicity
1924a
DreidimensionalitätdesRaumesundKausalität:Eine UntersuchungüberdenlogischenZusammenhang zweierFiktionen 247 Three-DimensionalityofSpaceandCausality:AnInvestigationofthe LogicalConnectionBetweenTwoFictions
1925a
ÜberdieAbhängigkeitderEigenschaftendesRaumes vondenenderZeit297
OntheDependenceofthePropertiesofSpaceonthoseofTime
1926a
PhysikalischeBegriffsbildung339
PhysicalConceptFormation
TextualNotes441 Bibliography445 IndexofNames469
Foreword TheCollectedWorksofRudolfCarnap containsalltheworksthatCarnap authorizedforpublicationduringhislifetime.ThisvolumecontainsallofCarnap’spublishedworksfrom1918through1926.RudolfCarnap(1891–1970) ranksasoneofthemostinfluentialphilosophersofthetwentiethcentury, engagingwith—amongmanyothers—Frege,Husserl,Russell,Wittgenstein, Gödel,andQuine.AsW.V.O.Quinewroteofhis“teacherandfriend”:“Carnapisatoweringfigure.Iseehimasthedominantfigureinphilosophyfrom the1930sonward.”Carnapmadesubstantialcontributionstothephilosophy ofscienceandtothephilosophyoflogic,andinparticulartothelong-standing questionofwhatrolephilosophy,logic,andmathematicsaretoplayinthe scientificenterprise.Hesystematicallyaddressedaremarkablerangeofissues, includingobjectivity,thelimitsofintelligibility,empiricism,theroleofthe physicalinpsychology,convention,theunityofscience,semantics,modality, meaning,ontologicalcommitment,probabilityandconfirmation,aswellas boththeobservationalandtheoreticaldiscourseofscience.Andheworked tirelesslyonbehalfofanidealofscienceandphilosophythathesawasacooperativeandinternationalenterprise.Itisnottoomuchtosaythatmanyof Carnap’sideaswererevolutionary,afactthatwassensedbothbythosewho reveredhiminhislifetimeandbythosewhovehementlyrejectedthoseideas.
Carnapworkedindefatigablytoimprove,clarify,andelaboratehisviews, producingabodyofworkimpressiveinitsvolumeaswellasinitsscopeand influence.Abriefchronologyfollowsthisforeword;whatitdoesnotshow isthatbythelate1920sCarnapwasaleadingfigureoftheViennaCircle, rapidlypublishingastreamofpapersandbooksthatattainedthestatusof classics.Hispivotalwork, LogischeSyntaxderSprache of1934,usheredin arevolutioninphilosophy.AndfollowinghismovetotheUnitedStatesthe tideofimportantpublicationsliftedanalyticphilosophytothecentralposition itoccupiesthroughouttheworldtoday.Hisworkdisplaysahighdegreeof coherenceandcontinuity,butitssheervolumemakesthebroadoutlinesofits developmenthardtodiscern,especiallybecausemanyofhispublicationshave longbeenvirtuallyunobtainable.Makingthiscoherencemorevisiblewasone motivebehindthepresentefforttomakehisworksavailableinanaccessible,
viiiForeword comprehensive,anddefinitiveform.Thiseditionwillcontainthetoolsneeded foramorethoroughandbalancedunderstandingofCarnap’swork,andfor therequirementsofanewscholarlyinterestinthehistoricaldevelopmentof analyticphilosophy.TheseriesincludesallofthebooksandpapersCarnap authorizedforpublicationinhislifetime.Theyappearinthelanguageoftheir originalcomposition,andallinEnglishaswell.Wherethoselanguagesare different,theoriginalandanEnglishtranslationareonfacingpages.Someof theoriginalshaveneverbeforebeentranslatedintoEnglish,andevenwhere theyhavebeen,mosttranslationsinthis CollectedWorks areneworrevised. Allthetextsarereset,re-edited,andprovidedwithintroductionsandeditorial notestomakethisbodyofworkaccessibletothecontemporaryreader.
Inundertakingthisprojectwehavehadbeforeustheinvaluableexample oftheeditionofKurtGödel’s CollectedWorks.ThefivevolumesofthatcollectioncontainallofGödel’spublishedwritingsandagenerousselectionofthe unpublishedones,includingmanuscriptsandcorrespondence.Eventhough thepresentcollectionismuchlarger,onlyCarnap’spublishedworkscouldbe included.Paralleleffortshavebeenunderway,however,tobringoutvarious selectionsofCarnap’sunpublishednotes,manuscripts,andcorrespondence.
Thisprojecthasbeenmadepossibleinpartbyaresurgenceofinterest inCarnap’sworkledbyadedicatedgroupofphilosopher-historians,manyof whomareontheeditorialboardorotherwiseinvolvedintheeditorialprocess. Theirhighlevelofscholarshiphasmadeitreasonabletobeginsuchaproject, andtheirunselfisheffortsarebringingittofruition.Theirworkhasinturn madethis CollectedWorks moreurgentlyneeded.AsCarnap’sideasaremore widelydiscussedinbooks,journals,anduniversityclasses,bothstudentsand professionalsneedtohaveavailablethefullrangeofCarnap’swriting,sothat theycanseeforthemselvesthesystematicanddramaticallynewconceptionof philosophythatCarnapdeveloped.
Theeditorsareacutelyawarethatoverthemanyyearsofworkonthe projectwehaveaccumulatedmanydebts,asweshallnodoubtcontinueto do,andmorethanwecanhopetorepay.TheprojectwasinitiatedbyOpen CourtPublishingCompanyanditsChairman,AndréCarus;withoutthisinitial supportandcommitment,theprojectwouldnothavegotofftheground.We aredelightedandgratefulthatOxfordUniversityPresstookuptheproject whenOpenCourtwasnolongerabletocontinueandwhenitseemedthatour effortsmightotherwisefail.Oureditorthere,PeterMomtchiloff,hasbeen extremelysupportive(andpatient)throughalltheremainingstages,whichwe greatlyappreciate.
Carnap’sdaughter,HannelieseCarnapThost,conveyedtheoriginal rightstopublishthesematerials.Hersupportfortheproject,andthatof othermembersoftheCarnapfamily,hasbeenasourceofinspirationand encouragementovertheyears.WenotewithsadnessherpassinginNovemberof2016.HerdaughterErikaCarnapThost,whovividlyremembersher grandfatherfromherteenageyears,hascontinuedtosupportourwork.
Manyotherindividualsandinstitutionshavebeengenerousaswell.In 2000–2001theNationalScienceFoundationprovidedagrantformetocon-
Forewordix ductafeasibilitystudyontheproject.ForthenextfiveyearstheCollegeof LiberalArtsandSciencesatArizonaStateUniversitysupportedaresearch assistanttohelpturnCarnap’sworksintoanelectronicformwheretheycould beeditedandreset.PreparingtheGermantext,whichinvolveditsownspecialproblems,wasmadepossiblebysuccessivetwo-yeargrantsfor2005–07 and2007–09fromtheDeutscheForschungsgemeinschaft(GermanResearch Foundation)toateamattheFriedrich-Schiller-UniversitätJenaheadedby GottfriedGabrielandWolfgangKienzlerthatalsoincludedSvenSchlotter (Grant-Nr.KI1103/1-1andKI1103/1-2).Inaddition,theFulbrightprogram providedascholarshiptoSteveAwodeytosupporthisworkinJena,andthe NationalEndowmentfortheHumanitiesprovidedaCollaborativeResearch Grantforthesameandforeditorialassistance.RichardZachwasawardeda UniversityofCalgarySpecialProjectsGrantforhisworkontheedition.He andDirkSchlimmreceivedagrantfromtheSocialSciencesandResearch CouncilofCanadaaswell.Thesegrantsallowedtheirrecipientstoassumethe substantialburdenofassemblingthetextofthisfirstvolumeandofresolving theenormousnumberoftechnicalandsubstantiveissuesthatariseinaventureofthismagnitudeandcomplexity.Alongthesamelines,RichardZachhas beenprimarilyresponsiblefordevelopingthe“CarnapProjectStyleManual”. Thisisahugein-housedocumentthatreadersneversee,eventhoughthey benefitfromitoneverylineofeveryvolume.
Finally,Iwanttoaddmypersonalthankstothosewhohaveworkedso hardonthisvolumeandtothosewhoarestillengagedinpreparingfuture volumes.Someofthenamesappearinalphabeticalorderonthevarioustitlepages,andsomearemembersoftheEditorialBoard.Theyhavegiven unstintinglyoftheirtime,efforts,andadvice,bothaseditorsofindividual volumesandinoverseeingtheprojectasawhole.Specialthanksareowedfor theskillfulassistanceofBrigittaArdenattheArchivesofScientificPhilosophy attheUniversityofPittsburgh,aswellasforthatofBrigitteParakeningsofthe PhilosophischesArchivattheUniversityofConstanceDepartmentofPhilosophy.Alargeteamofresearchassistantshasalsobeeninvaluabletotheoverall project;itincludedEdwardDean,RodneyGomez,DarinHarootunian,Leslie Hudson,Hans-ChristophKotzsch,MiaMcNulty,DanielRichter,JohnStopple, DominicTilbury,JuneWagner,andSandraWoien.Researchassistantswho workedonaparticularvolumearethankedintherespectivevolume’seditors’ acknowledgements.Alloftheeditorsacknowledgeandthankeachofthem fortheirwork,withoutwhichthisprojectwouldhavebeenimpossible.And onbehalfoftheentireCarnapProject,oursincerethankstoallandtoourcolleagues,students,andfamilieswhohavebeenpatientandhelpfulaswell.The supportwehavereceivedfromindividuals,universities,andgrantingagenciesinseveralcountrieshasmadethisatrulycooperativeandinternational enterprise.Carnapwouldhavebeenpleased.
RichardCreath
Acknowledgements Theeditorsofthisvolumearegratefultothemanypeoplewhohavehelped bringittocompletionandimproveitsquality.Aboveall,theseincludethe LaTeXexpertsontheeditorialboardwhohavemadeitpossibletoaccommodateoureditorialintentionsinLaTeXwithintheoriginalseriesdesign— SteveAwodey,DirkSchlimm,andRichardZach.Theirtechnicalandeditorial assistancehasbeenindispensable,fromtheoverallarchitecturedowntothe minutestdetails.
WewerefortunatethatGottfriedGabrieljoinedtheeditorialboardofthe Carnapedition,sinceheimmediatelytookontheprojectofputtingtogetheran editorialteam—andrepeatedlyfindingfundingforit—toestablishadefinitive GermantextforallofCarnap’swritingsinthefirstfivevolumesoftheedition. WeareextremelygratefulforGottfried’sroleinthiscomponentoftheedition, whichhasespeciallybenefitedthisvolume.
WearegratefultoDavidMalament,whocontributedanarticle-length noteonthemathematicalandphysicalbackgroundtoCarnap’spaper(1925a) inthisvolume,therebymakingitpossibleforreaderstoseeCarnap’seffortsin theearly1920sfromabroaderperspectiveencompassinginsightsfromrecent projectsbroadlysimilartotheearlyCarnap’s.
Wearegratefultothemanyothercolleagueswhorespondedtoqueries andhelpedtoimprovethetranslationsandnoteswithspecializedknowledge aboutparticularaspectsofCarnap’swork,includingSteveAwodey,Erik Curiel,DavidMalament,ErichReck,DirkSchlimm,HowardStein,Clinton Tolley,PierreWagner,andRichardZach.WearegratefultoRichardCreath, theGeneralEditorofthisedition,forcontributingeditorialnotesforCarnap’s booklet(1926a),andforhisthoroughandconscientiousreviewoftheentire volumewhenitwasnearlycomplete.
WeareparticularlygratefultoPierreWagnerfororganizingaworkshop on DerRaum,Carnap’s(1922a)doctoraldissertation,perhapsthemostsubstantialtextinthisvolume,inthePalaisClam-GallasontheWähringerstraße inVienna,whichthenhousedtheFrenchCulturalInstitute.Thisworkshop, heldundertheauspicesofhisproject“Logiscience”fundedbytheFrench AgenceNationaledelaRecherche,tookplaceon1–2June2010withthepar-
xiiAcknowledgements ticipationofSteveAwodey,AndréCarus,JeremyGray,JeremyHeis,Thomas Mormann,ErichReck,AlanRichardson,DirkSchlimm,ErhardScholz,ClintonTolley,andPierreWagner.Themainfocusofthediscussionwereanearly draftofMichaelFriedman’seditorialnoteson DerRaum andadetailedcommentaryonsomeofthesenotesbyHowardStein(whowasnotabletoattend). WearegratefultoHowardandalltheparticipantsandespeciallytothetwo historiansofmathematics,JeremyGrayandErhardScholz,notonlyfortheir specificcontributionstotheeditorialnoteson DerRaum,acknowledgedin therelevantpassages,butfortheirwillingnesstoimparttheirbroadperspectiveonrelativitytheoryandearlytwentieth-centurymathematicsingenerous detail.
WebenefitedimmenselyfromtheexpertiseofBrigittaArdenandBrigitte Parakenings,thearchivistsinPittsburghandKonstanz,respectively,who helpedusreadthemarginalnotesCarnaphadwritteninhiscopiesofthepublicationsinthisvolume,mostlyinhispersonalizedversionofStolze-Schrey shorthand.WearegratefultotheArchivesofScientificPhilosophyattheHillmanLibrary,UniversityofPittsburghfortheirsupportandtheirpermission toreproducequotationsfromdocumentsintheircollectionofCarnapPapers, towhichtheyholdthecopyright.
Finallywearegratefultotheresearchassistantswhocontributedspecificallytothisvolume,EdwardDean,Hans-ChristophKotzsch,andDaniel Richter,aswellastothemembersoftheeditorialandproductiongroupatOxfordUniversityPressresponsibleforshepherdingthisunrulyprojectthrough theirsystemwithsuchassuredandpatientcompetence:PeterMomtchiloff, AprilPeake,CarolineQuinnell,JonathanRowley,andManuelaTecusan.
A.W.Carus
MichaelFriedman
WolfgangKienzler
AlanRichardson
SvenSchlotter
ChronologyofCarnap’sLife 1891 Bornon18MayinRonsdorf,nowpartofWuppertal,inNorthwest Germany.
1898 Father(JohannesSebulonCarnap)dies.Carnapishome-schooleduntil theageoftenbyhismotherAnnaDörpfeldCarnap.
1901 EnrollsattheGymnasiuminBarmen(nowalsopartofWuppertal).
1909 MoveswithfamilytoJena,wheretheyliveinthehouseofAnna’s brotherWilhelmDörpfeld,afamousarchaeologist;Carnapfinishessecondary school.
1910–14 StudiesattheUniversityofJenaandtakescourseswithGottlob Fregeonlogicandthefoundationsofmathematics.DuringthisperiodCarnap alsobecomesinvolvedwith,andtakesaleadershiprolein,thelocalmanifestationoftheGermanYouthMovement,EugenDiederichs’s“SeraGroup”.
1911–12 SpendsasemesterinFreiburgimBreisgau,whereamongother thingsheattendsRickert’slectures(possiblytogetherwithHeidegger)and giveslecturestothelocal“FreeStudents”(theuniversitywingoftheYouth Movement)onvarioussubjects,including“ReligionandtheChurch”.
1914 Embarksondoctoralworkinexperimentalphysics.
1914 WorldWarIbreaksoutinAugustandCarnapenlistsinthearmy.InitiallyassignedtotheCarpathiansbecauseofhisskiingability,heistransferred tothewesternfrontin1916,whereheseessomeofthebloodiestaction.He alsocontinuestofollowtheYouthMovementpressandenthusiasticallyreads Einstein’spapersongeneralrelativity.
1917 WoundedinactionandawardedtheIronCross.TransferredtoBerlin forresearchonwirelesstechnology.HearsEinstein’slecturesonphysics.MarriesElisabethSchöndube,andtheymovetoherparents’houseinBuchenbach nearFreiburgimBreisgau,wherenearlyallthetextsinthisvolumearewritten.
xivChronology
1918 CarnapcontinueshisstudiesatJenafromBuchenbach.Circulates newsletterscontainingitemsfromtheforeignpresscriticaloftheGerman government,withhisowncriticalcommentary.Somemonthsbeforethe armistice,Carnapjoinstheanti–warIndependentSocialistParty(USPD).
1919–20 Completesmaster’s-leveldissertationsinphysicsandinphilosophy (thelatteronthefoundationsofgeometry),andobtainsthesecondaryteaching certificate.
1921 Completeshisdoctoraldissertationinphilosophy, DerRaum,under thesupervisionofBrunoBauch.CarnapwritestoRussellforhelpobtaininga copyof PrincipiaMathematica,andreceivesinsteadalengthylettercontaining themaindevelopmentinlonghand.
1922 ReadsRussell’s OurKnowledgeoftheExternalWorld earlyintheyear, whichsuppliesakeyideaforCarnap’senvisagedconstitutionsystemofall concepts;hewritesthefirstsketchofthe Aufbau,amanuscriptcalled“Vom ChaoszurWirklichkeit”.
1922DerRaum ispublishedintheseriesofmonographsupplementstothe Kant-Studien.
1923 OrganizesfirstconferenceofscientificphilosophyinErlangen,attendedbyHansReichenbach,KurtLewin,HeinrichBehmann,andanumber ofothers.Carnappresents“VomChaoszurWirklichkeit”therebutfindsthat nooneunderstandsit.
1923–24 ContactwithEdmundHusserlandhisgroupattheUniversityof Freiburg.
1925 Writesfirstdraftofthebooklaterpublishedas DerlogischeAufbauder Welt,andgivesatalkinViennathatisbasedonit.
1926 MovestoViennafor“Habilitation”underMoritzSchlickandbecomes PrivatdozentinphilosophyattheUniversity. PhysikalischeBegriffsbildung published.
1927 Beginsworkonthemajorproject Untersuchungenzurallgemeinen Axiomatik.CarnapandotherViennaCirclemembersmeetprivatelywith Wittgenstein.CarnaplaterexcludedbyWittgenstein.
1928DerlogischeAufbauderWelt and ScheinproblemeinderPhilosophie published.
1928–29 KurtGödelattendsCarnap’scourseon“metalogic”(officially “ThePhilosophicalFoundationsofArithmetic”)inthewintersemester.
Chronologyxv
1929 Givesapopularlecture“VonGottundSeele [[OnGodandtheSoul]]” attheErnstMachSociety.Carnapisadvisedbycolleaguesnottopublishthis asitwillmakeitimpossibleforhimtogetajobataphilosophydepartment anywhereinGermany.InOctober,Carnapgivesaseriesoflecturesatthe BauhausinDessau.The“manifesto”oftheViennaCircle,thepamphlet WissenschaftlicheWeltauffassung,writtenbyCarnap,Neurath,andHahn,is publishedtomarkthefoundingoftheErnstMachSociety.Publishes Abriss derLogistik,alogictextbooklargelywrittenin1921–23asanexpositionof Russell’sletterof1921.CarnapmakeshisdivorcefromElisabethofficial; separatedsince1925,theyremainfriends.
1930 InFebruary,AlfredTarskivisitsVienna;inprivateconversationshe convincesCarnapthatthe AllgemeineAxiomatik projectismisconceived.In August,GödelinformsCarnapthathehasprovedtheincompletenessofthe usualaxiomsystemsforarithmetic;ataconferenceinKönigsberginSeptemberGödelannounceshisdiscovery,whichispublishedearlythefollowing year.
1930–40 Co-edits Erkenntnis withHansReichenbach.
1931 Duringasleeplessnighton21January,Carnapconceivesofthe“syntax”approachthatappearstosavetheViennaCircle’sdoctrinesfromthe discoveriesofGödelandTarski.InJune,Carnappresentshisnewapproachto theViennaCircle.IntheautumnhemovestoPragueasprofessorof Naturphilosophie (philosophyofscience)attheGermanUniversity,andembarksona book-lengthexpositionofthe“syntax”approach.Beforemovinghemarries InaStöger,withwhomhehadbeenliving.
1932 “ÜberwindungderMetaphysikdurchlogischeAnalysederSprache” and“DiephysikalischeSprachealsUniversalsprachederWissenschaft”appearin Erkenntnis.Thelatteristhefirstpublicationapplyingthenew“syntax” approach.WittgensteinaccusesCarnapofplagiarism.Quinevisitsearlyin theyearasthefirstdraftof LogischeSyntaxderSprache isbeingtypedbyIna Carnap.CorrespondencewithGödelregardingthefirstdraftofthe Syntax. Intheautumn,afteravacationintheTyrolwithFeiglandPopper,Carnap adoptsthe“principleoftolerance”,firstevidentin“ÜberProtokollsätze”, whichappearsin Erkenntnis lateintheyear.
1933 TheNaziseizureofpowerinJanuaryendsanyhopeCarnapmighthave forajobinGermany,givenhisknownpoliticalandsocialviews.Hebeginsto lookforopportunitiesintheUnitedStates.
1934LogischeSyntaxderSprache published.
1935 AttheInternationalCongressofScientificPhilosophyinParis,Carnap defendsTarski’ssemantics.Atthesameconference,plansforanencyclopedia
xviChronology arelaid,withOttoNeurath.In Erkenntnis,CarnapgivesPopper’s Logikder Forschung alargelypositivereview.
1936 MovestoChicagotobecomeprofessorofphilosophyattheUniversity ofChicago,afterhavingturneddownanofferfromPrinceton.“Wahrheit undBewährung”,thefirstpublicationtoreflectCarnap’snewembraceof semantics,appearsintheproceedingsoftheParisconference.
1936–37 “TestabilityandMeaning”publishedin PhilosophyofScience.
1938–62 Co-edits TheInternationalEncyclopediaofUnifiedScience with NeurathandCharlesMorris.
1939 Carnap’sowncontributionstothe Encyclopedia ispublished,including FoundationsofLogicandMathematics.RussellvisitstheUniversityof Chicago,whereheandCarnapengageinlivelydebatesatajointseminar.
1939–41 OnleavefromChicago,CarnapvisitsHarvardUniversity,wherehe meetsregularlyfordiscussionswithQuine,Russell,Tarski,andothers.Also, CarnaphearsalecturebyRichardvonMisesthatre-kindleshisinterestin probability.
1940 Beginsworkoninductivelogic,aprojectthatwouldcontinuetobeat theforefrontofCarnap’sattentionandtotakeupthebulkofhistimeuntilthe endofhislife.
1942IntroductiontoSemantics published.BecomesaUScitizen.
1943FormalizationofLogic published.
1945 Firstpublicationsoninductivelogic:“OnInductiveLogic”in PhilosophyofScience and“TheTwoConceptsofProbability”in Philosophyand PhenomenologicalResearch.
1947MeaningandNecessity published.
1950LogicalFoundationsofProbability published;“Empiricism,Semantics,andOntology”appearsinthe Revueinternationaledephilosophie.
1951 QuinegivescolloquiumtalkinChicagoconfrontingCarnapwiththe wide-rangingcritiquesoontobepublishedin“TwoDogmasofEmpiricism” andotherpapers.FeiglfirstapproachesSchilppaboutdevotingavolumeofthe bynowwell-establishedLibraryofLivingPhilosopherstologicalempiricism. CarnapandReichenbacharetobethemaintargetfiguresofthevolume.
1952 CarnapmovestotheInstituteforAdvancedStudyatPrinceton,New Jersey,wherehedevotesconsiderabletimetoaprojectonentropythat,to
Chronologyxvii hisfrustration,thephysiciststherehardlyengagewith. TheContinuumof InductiveMethods published.
1953 AfterReichenbach’ssuddendeathinApril,Schilpppersistswiththe planforavolumeintheLibraryofLivingPhilosophers,nowtobefocussed solelyonCarnap.Bytheendoftheyear,thecontributorsareagreedonand thepaperscommissioned.
1954 Mostofthepapersfor ThePhilosophyofRudolfCarnap arewritten, andCarnapbeginshisreplies.CarnapmovestoLosAngelesasHansReichenbach’ssuccessorattheUCLAphilosophydepartment.
1956 Finallybeginsworkontheautobiographyfor ThePhilosophyofRudolf Carnap,andcontinuestoworkontherepliestocritics.
1958 Theautobiographyandrepliesfor ThePhilosophyofRudolfCarnap aresentofftoSchilpp,whoasksforsubstantialcuts.Intheautumnquarterat UCLA,MartinGardnersitsinonCarnap’sseminar“PhilosophicalFoundationsofPhysics”andtape-recordsthesessionsasrawmaterialforapopular book.
1960 AfterrepeatedlydelayingtheCarnapvolume,thepublisherofthe LibraryofLivingPhilosophers,TudorPublishingCompany,terminatesits contractwithSchilpp.OpenCourtPublishingCompanyagreestopublishthe series.
1961 OfficiallyretiresfromUCLAbutcontinuestoteach.
1961 Secondeditionof LogicalFoundationsofProbability.
1963ThePhilosophyofRudolfCarnap publishedbyOpenCourt.
1964 InaCarnapcommitssuicide.Carnap’syoungestdaughter,Hanneliese CarnapThost,comestoLosAngelesfromGermanywithherdaughterErika, tolookafterhim.HeseriouslyconsidersmovingbacktoGermany.
1965 CarnapdefendshisviewsoninductivelogicagainstPopperataconferenceinLondonorganizedbyImreLakatos,whoalsoeditedtheproceedings, publishedin1968.
1966 ThebookresultingfromMartinGardner’sredactionofCarnap’sUCLA seminar, PhilosophicalFoundationsofPhysics:AnIntroductiontothePhilosophyofScience,ispublishedbyBasicBooks.(Latereditionsappearunderthe subtitle.)
1970 Carnapdieson14SeptemberinSantaMonica,California,nearLos Angeles.
1971 ThefirstpartofanewandrevisedexpositionofCarnap’sideasoninductivelogicispublishedinthebook StudiesinInductiveLogicanProbability, volumeI(editedbyCarnapandRichardC.Jeffrey).
1977 Carnap’seffortstoarticulatehisconceptionofphysicalentropyinthe mid-1950sarepublishedunderthetitle TwoEssaysonEntropy (editedby AbnerShimony).
1980 ThesecondpartofCarnap’srestatementofhisconceptionofinductivelogicispublishedinthebook StudiesinInductiveLogicandProbability, volumeII(editedbyRichardC.Jeffrey).
TheTexts. ThetextsincludedinthisvolumecompriseallofCarnap’spublicationsthrough1926.Forthemostpart,onlyminimalchangeshavebeen madetothepublishedtexts;thosewehavemadeareexplainedinthe“Textual Notes”attheendofthevolume.EachtextissetwiththeoriginalGermanon theverso,andanEnglishtranslationonthefacingrectopages.Theonlyexceptionisthestand-alonebibliographyto1922a.Settingthisonfacingpages wouldhaveresultedinessentiallythesametextonbothsides.Wehaveopted insteadtoincludetranslationsofthesparseGerman-languagecommentsin [[doublesquarebrackets]].Asexplainedinthenextsection,doublesquare bracketsarealsousedtomarkeditorialinsertionsintothetext.
EditorialandTextualNotes. Eachtextisfollowedbyasectiongivingbibliographicinformation,informationonthetranslation,editorialnotestothe text,andsometimesotherbackground.Thenotesarelettered,andindicated inthemarginalongsidethemaintext(whentherearemorethan26editorial notes,lettersaredoubled,i.e.the27thnoteislabeled“aa”).Thesenotesare oftwokinds:explanatorynotesbytheeditors,andnotesrecordingmarginal annotationsinCarnap’spersonalcopiesofthetexts.Carnap’spersonalcopies areheldintheCarnapCollection,ArchivesofScientificPhilosophy(ASP), SpecialCollectionsDepartment,HillmanLibrary,UniversityofPittsburgh, andarereferencedbybox,folder,anditemnumber.Carnap’sannotationsare usuallyinshorthand,andweretranscribedbyBrigittaArdenattheHillman Library.Changesincorporatedintothetexts,whetherCarnap’sortheeditors’, arerecordedinthe“TextualNotes”.ToavoidconfusionwithCarnap’sownuse ofsquarebrackets,alleditorialinsertions,translations,andsimilarcomments intheeditorialnotesandintroductionaresetin [[doublesquarebrackets]] InterpolationsinthetranslationsfromCarnap’stextsarein[singlesquare brackets].
PageReferences. PagereferencesinCarnap’stextshavenotbeenchanged; theyrefertotheoriginalpagination,whichisrecordedinthiseditionbygiving theoriginalpagenumberintheinsidemargin.Thisalsoappliestothepage numberslistedintheoriginaltablesofcontentsandindiceswithinCarnap’s
xxInformationfortheReader
texts.Intheeditorialnotes,however,pagereferencestotheCarnaptext theyannotate,andalsotoanyotherCarnapiteminthisvolume,aretothe paginationofthisvolume,nottotheoriginalpagination.Thepositionin theoriginaltext(inthisvolume,theGermantext)whereapagebreakoccurs isindicatedbyaverticalbar,unlessthecorrespondingpagebreakoccurs betweenparagraphsorjustbeforeaheading.Thepagenumberofthefirst pageisomitted.
BibliographicalReferences. Carnap’sbibliographicalreferenceshavegenerallybeenmaintainedasintheoriginal;thisincludesthebibliographiesfor 1922a,1925a,and1926a.InsomecasesCarnap’sreferencesareincomplete orincorrect,andtheseareleftunchanged.Aseparatevolumebibliographyat theendofthevolumegivesuniform,complete,andcorrectedbibliographic informationforallitemscitedinCarnap’stextsandtheeditorialmaterials.If thereismorethanoneitembyasingleauthorinagivenyear,lettersuffixes areappendedtomakethereferencesunique.InthecaseofCarnap’stexts only,lettersuffixesare always added,andareincorrespondencewiththeyearnumbersystemofthebibliographybyBenson(1963),sothat,forexample, Carnap1922aherecorrespondstoitem1922–1intheBensonbibliography.
ArchivalReferences. Theintroductionandeditorialnotesoccasionallyrefertoarchivaldocumentspreservedintwoplaces:theSpecialCollections DepartmentattheYoungResearchLibrary,UniversityofCaliforniaatLosAngeles,manuscriptcollectionNo.1029(abbreviatedUCLA);andtheArchives ofScientificPhilosophyintheSpecialCollectionsDepartmentoftheHillman Library,UniversityofPittsburgh(abbreviatedASP).DocumentsatUCLAare referredtobyboxandfoldernumber,andsometimesalsobypagenumber.The documentsatASParereferredtobynumbersseparatedbyhyphens(e.g.ASP 001–02–03,where001istheboxnumber,02isthefoldernumber,and03is thedocumentnumber).Somedocumentsreferredtomoreoftenaregiven specialabbreviations,whichareexplainedinthetextorfootnotes.
Index. Theindexofnamescoversthemaintextsandtheeditorialintroductionsandnotes,withtheexceptionofoccurrencesofnameslistedinthe bibliographiesof1922aand1926a,andtheseparateindexto1926a.Toavoid theneedlessduplicationintheIndexofNamesresultingfromGermanandEnglishtextbeingsetonfacingpages,theentriestherereferonlytotheGerman text.
SpellingandPunctuation. TheGermantextsarestandardizedtotheGermanspellingusedinGermany(thoughnotinSwitzerland)until1996(revised in2006),nowknownas alteRechtschreibung,asthisstandardrequiredthe fewestchangestoCarnap’sownGermanusage.TheEnglishtextsusestandard Americanspellingandpunctuation,withoneimportantexception:following Carnap’sownpersonalpreference,insentencescontainingquotations(that donotthemselvesincludefinalpunctuation),finalpunctuationthatAmerican usageputsinsidequotationmarks(periodsandcommas),ishereplaced outside theclosingquotationmark(asstandardinUKusage,which,however,uses
singlequotationmarksor“invertedcommas”inplaceofthedoublequotation marksstandardinAmerican).Thepunctuationofentirequotedsentences remainsinsidethequotationmarks.Furtherdetailscanbefoundinthesection onpunctuationintheintroductoryremarkstothetextualnotesonp.441.
Typesetting. ThevolumehasbeenpreparedusingDonaldKnuth’sTEX typesettingsystem,withLeslieLamport’sLATEXformat,PeterWilson’s memoir class,andstylefilesbyDirkSchlimm,adaptedbySteveAwodey,DirkSchlimm, andRichardZach,basedonadesignbyJohnGrandits.AdditionalTEXcodefor preparingtheindex,textualnotes,andtypesettingthetextsonfacingpages wascontributedbyRichardZach.TherunningtextissetinITCBodoni,the mathandsymbolicpassagesinFourier,andtheheadsinMonotypeGillSans. Collaborativeeditingofthetextshasbeensignificantlyfacilitatedbytheuseof theSubversion,andlaterGitrevisioncontrolsystemsrunningonaserverat CarnegieMellonUniversityadministeredbyJosephRamsey.
Introduction TheapparentlyveryheterogeneousessaysgatheredinthisfirstvolumeofCarnap’spublishedwritingsactuallyfallquiteneatlyintothreedistinctgroups, whichcaneachbediscussedseparately,butwhich,aswewillsee,dovetail surprisinglyclosely:(1)Carnap’sutopianconceptionoftheroleofknowledge andideasinsociety;(2)approachestowardaconceptionofasystemofscience orsystemofknowledge;(3)the Aufbau project.Group(1)isrepresented,in thepublishedwritingsofthisperiod,onlybyabriefreviewarticle,“Leagueof Nations—LeagueofStates?”(1918a),inapoliticalnewsletterthatappeared irregularlyduringtheGermanrevolutionandintheclosingweeksofthewar. ItwastohavebeenfollowedbyamoresubstantialpiecethatCarnapwrote soonafterwards(orwasworkingonsimultaneouslywiththepublishedreview) aboutGermany’sdefeatinthewar.Inthisarticle,whichremainedunpublished,Carnaprevealssomethingofthemotivationforhisearlyphilosophical ideas.Group(2)comprisesmostoftheitemsinthisvolume,includingareview ofabookbythephysicistandphilosopherHugoDingler(1921c),Carnap’s dissertation, DerRaum [[Space]],hisfirstpublishedphilosophicalpaper,“The TaskofPhysics”(1923a),afurtherpaper,“OntheDependenceofthePropertiesofSpaceonthoseofTime”(1925a),andabookletforgeneralreaders PhysicalConceptFormation (1926a).Group(3),finally,includesonlythe paper“Three-DimensionalityofSpaceandCausality:AnInvestigationofthe LogicalConnectionbetweenTwoFictions”(1924a).Butthisagain,asinthe caseofthesinglerepresentativeofgroup(1),isthetipofamuchlargericeberg.Wewilldiscusseachofthesegroupsseparately.Giventhechronology, however,therewillbefivestepsratherthanthree:first,group(1);then,two sectionsongroup(2):oneontheearliestwritingsandoneon DerRaum.A sectionongroup(3)follows,ontheinitiationofthe Aufbau projectinearly 1922.Weconcludewithasectiononthebackgroundto PhysicalConcept Formation,whereweseesomecontinuitieswiththeearlierrepresentatives ofgroup(2),butnowagainstthebackgroundofthe Aufbau projectandthe changesitunderwentin1924.Thefirstdraftofthebooklatertobeentitled
TheLogicalConstructionoftheWorld wasafterallwrittenimmediatelybefore PhysicalConceptFormation. 1
1.TheYoungCarnapandhisUtopianDreams BeforeWorldWarI,CarnaphadbeenveryactiveintheGermanYouthMovement,2 whoseaim,Carnapwrotemanydecadeslater,“wastofindawayoflife whichwasgenuine,sincere,andhonest,incontrasttothefakesandfraudsof traditionalbourgeoislife;alifeguidedbyourownconscienceandourownstandardsofresponsibilityandnotbytheobsoletenormsoftradition.”Andthough theYouthMovement“didnotleaveanyexternallyvisibleachievements,the spiritthatlivedinthismovement,whichwaslikeareligionwithoutdogmas, remainedapreciousinheritanceforeveryonewhohadthegoodlucktotake anactivepartinit.Whatremainedwasmorethanamerereminiscenceofan enjoyabletime;itwasratheranindestructiblelivingstrengthwhichforever wouldinfluenceone’sreactionstoallpracticalproblemsoflife”.3 Duringthe war,CarnapremainedintouchwiththeYouthMovementpress,particularly thepartsofthemovementthathadrespondedtothewarbybecomingmore politicallyengaged,especiallyinthedirectionofsocialism.Inthesummer of1918CarnapjoinedtheUSPD,thebreakawaywingoftheGermansocial democraticpartythathadin1917repudiatedthatparty’ssupportforthewar. Healsocirculatedexcerptsfromtheforeignpresstofriends,someofwhom wereinactivecombat,andwascaughtbytheauthoritiesshortlybeforethe regimechangeinOctober(whichsavedhim).Duringthistime,hewasalso workingtogetherwithaYouthMovementacquaintance,KarlBittel,tostarta left-wingpoliticalnewsletterspecificallyaimedatthosewhohadbeenactive intheYouthMovement.Hiscontributiontothefirstissueofthisnewsletter (called PolitischeRundbriefe)isthebriefreviewpublishedhere.Itwastohave beenfollowedbyamuchlongerandmoregeneralreflectionon“Germany’s Defeat”,whichhoweverremainedunpublished.Thistextprovidesagood overviewofCarnap’spoliticalworldviewatthistime—whichunderlies,oris atleastintimatelyconnectedwith,hisphilosophicalworldview.Ofparticular importanceishisvisionoftheroleoftheintellectualinthereconstructionof society.
CarnaptakesforgrantedthatGermanywastheprimarycauseofthewar: “Ourgenerationandthenexthaveaheavyburdenofpenancetobear”,4 since “theframeofmindinEuropethatmadetheworldwarinevitableandthen 1 OnthechronologyofCarnap’searlywritingssee(Carus2016)andCh.1–5of(Carus 2007).
2 The“SeraGroup”inJenathatCarnapbelongedtorepresentedaspecificlocalvariant ofthewiderGermanYouthMovement.Itisdescribedinitslocalaswellasinitsbroader intellectualandculturalcontextbyWerner(2003).
3 YoungResearchLibrary,UniversityofCaliforniaatLosAngeles,SpecialCollections Department,ManuscriptCollectionNo.1029,RudolfCarnapPapers(henceforth UCLA),Box2,CM3,secondfolder,pp.B34–5.
4 ArchivesofScientificPhilosophy,HillmanLibrary,UniversityofPittsburgh,Carnap Papers(henceforthASP),110-01-04,p.14.
Introductionxxv madeitsterminationimpossibleuntilnow”drawsits“principalnourishment fromGermany”(ibid.,p.16).Theacademicsandintellectualsbearaspecial responsibilityforthis,Carnapsays,becauseoftheirreluctancetodirtytheir handswithpolitics,duetotheirfailuretofindtherightbalancebetweenthe activeandthecontemplativelife.AddressingtheYouthMovementreadership ofBittel’s Rundbriefe,Carnapgoesontoposethequestion:
Andwhatis our shareinGermany’sguilt?Wedofeelasolidarity withtheentireGermanpeople,i.e.,wefeelaninnersharingof fateandguilt.Butinamorespecificsensewefeelconnectedto thoseamongthepeoplewhosympathizewithusinmodeoflife, attitudes,andconvictions—withpeoplewhosharethelifeofthe mind. Whatistheirsharein [[Germany’s]] guilt? Theirindifference towardpoliticallifehasvariousgrounds.Ofthetwopolarforces ofmentallife— actionandcontemplation,whichsomehowhaveto findayetunknownsynthesis—thesecond,quietist,mysticalone hasperhapsexercisedtoostronganinfluenceonGermanpeople. Atthispointweourselvesdon’tknowhowtofindtherightbalance betweenthesetwoforces,andyetwemustreachthedamningverdict: disharmony [[inthisrespect]] is [[agrave]] fault [[Disharmonieist Schuld]].(Ibid.,pp.15–16)
Thisimbalance“belongstothemostfundamentalproblemswhosesolution musturgentlyconcernus [[derenLösungunsamHerzenliegenmuß]]”.(Ibid.) Butwewhoareinvolvedinthelifeofthemindhavealsofailed,Carnapgoes on,tocombatthosetendenciesinourownranks—withinthehumansciences [[Geisteswissenschaften]] —thatcomplacentlyacceptthepaststagesofthe humanraceasprescriptiveforpresentandfuture.Thatsuchirresponsible ideasarepreachednotonlybypoliticiansbutevenbyleadingprofessorsofthe humansciences“isanespeciallyheavyburdenonour—theintellectuals’— balancesheetofguiltandourresponsibilityforthefuture”(Ibid.,pp.16–17). Whatshouldbeourresponse?Aboveall,weshouldnotfallintocomplacency.Wemustrollupoursleevesandgettowork:
Thegreaterthefault,themoreurgentthetask.Letusnotevade thesenseofguiltnascent [[aufkeimend]] inus!Butletusalsonot collapseintobitternessorresignation.Thereisneithersufficient reasonnorenoughtimeforthis.Thetimeisuponus,forthenext yearswillbedecisiveineveryrespectforshapingtheworld-system andforshapingthereconstructionofpeoples.
Inparticular,wemustgetusedtotheunfamiliar(tous)ideaofpoliticalinvolvement—butCarnapmeans“political”ina very broad,almostuniversal sense:
Theexperienceofrecentyearshasledustogiveoneparticular relationaspecialsignificance,i.e.,thatofpolitics,inthebroadest sense.Ifwebelievethatthisiswherewemustnowapplythelever,
