Definition
Existence is the state of having being or reality in contrast to nonexistence and nonbeing. Existence is often contrasted with essence: the essence of an entity is its essential features or qualities, which can be understood even if one does not know whether the entity exists.
Related concepts
A Study in ScarletA Treatise Concerning the Principles of Human KnowledgeAbhidharmaAbsolute idealismAbstract and concreteAbstract objectAbstract object theoryAcademic SkepticismAccident (philosophy)Achintya Bheda AbhedaAcornAction theory (philosophy)ActualismAdi ShankaraAdvaita VedantaAesthetic emotionsAestheticsAfrican philosophyAfricana philosophyAgriculturalismAjñanaAl-GhazaliAl-KindiAl-NijatAlexius MeinongAlfred North WhiteheadAlvin PlantingaAlyssa NeyAmerican philosophyAnalytic philosophyAnalytical MarxismAnalytical feminismAnarchismAnattāAnaximanderAncient ChinaAncient Egyptian philosophyAncient GreeceAncient Greek philosophyAncient IndiaAncient Roman philosophyAncient philosophyAnekantavadaAngela MerkelAniccaAnima mundiAnselm of CanterburyAnti-realismAntihumanismApplied ethicsApplied philosophyAristotelianismAristotleArthur Conan DoyleArthur SchopenhauerAtomismAugustinianismAustralian philosophyAverroesAverroismAvicennaAvicennismAxiologyAxiomAztec philosophyBananaBaruch SpinozaBehaviorismBeing (disambiguation)Being and NothingnessBeing and TimeBernard BolzanoBertrand RussellBhedabhedaBigfootBoethiusBrahmanBritish idealismBritish philosophyBuddhist philosophyBundle theoryByzantine philosophyCartesianismCategories of beingCategory of beingCausal closureCausalityChan BuddhismCharles Sanders PeirceCharvakaChinese philosophyChristian Wolff (philosopher)Christian philosophyChurch FathersClassical RealismClassical liberalismCogito, ergo sumCoherentismCollectivism and individualismCommunitarianismCompatibilismConceptConceptsConceptualismConcluding Unscientific Postscript to Philosophical FragmentsConfucianismConsequentialismConservatismContemporary philosophyContinental philosophyContingency (philosophy)Cosmological argumentCosmologyCosmosCreation from nothingCritical rationalismCritical theoryCritique of Pure ReasonCynicism (philosophy)CyrenaicsCzech philosophyDaneshnameh-ye AlaiDanish philosophyDaoDaoismDaoist philosophyDaseinDataDavid HumeDavid Lewis (philosopher)David Malet ArmstrongDe GruyterDe rerum naturaDeconstructionDeductive validityDeontologyDerek ParfitDeterminismDispositioDomain of discourseDonald Davidson (philosopher)DualistsDukkhaDuns ScotusDutch philosophyDvaita VedantaEarly modern philosophyEastern philosophyEdmund HusserlEdo neo-ConfucianismEgg-laying mammalsEleaticsElementary particlesEliminative materialismElmEmbodied cognitionEmergentismEmpire State BuildingEmpiricismEmpiricistEnactivismEnneadsEntityEpicureanismEpiphenomenalismEpistemological particularismEpistemologyEretrian schoolEssenceEssentialismEthicsEthics (Spinoza book)Ethiopian philosophyEvent (philosophy)Existence (disambiguation)Existence precedes essenceExistence theoremExistential quantifierExistentialismExperienceExperimental philosophyFalsifiabilityFeminist existentialismFeminist metaphysicsFeminist philosophyFictionFideismFirst-order logicFlying carpetsFormalism (art)FoundationalismFour fundamental forcesFrancisco SuárezFrankfurt SchoolFranz BrentanoFree logicFree willFrench philosophyFriedrich NietzscheFunctionalism (philosophy of mind)G. E. M. AnscombeG. E. MooreGenderGeorg Wilhelm Friedrich HegelGeorge BerkeleyGerman idealismGerman philosophyGilbert RyleGilles DeleuzeGod in ChristianityGottfried Wilhelm LeibnizGottlob FregeGreek mythologyHard determinismHard incompatibilismHegelianismHeideggerian terminologyHellenistic philosophyHenri BergsonHeraclitusHermann LotzeHermeneuticsHilary PutnamHindu philosophyHistoricismHistory of philosophyHistory of philosophy in FinlandHistory of philosophy in PolandHolismHomerHuayanHumanismHypostatic abstractionIdeaIdealismIdealistsIdentity (philosophy)IlluminationismImmanuel KantImportanceIncompatibilismIndian philosophyIndigenous American philosophyIndividualismIndonesian philosophyInformationInsightInstitutional theory of artIntelligenceIntelligent designIntentionIntentional objectIntentionalityInternalism and externalismInterpretations of quantum mechanicsIonian School (philosophy)Iranian philosophyIsaac NewtonIslamic philosophyItalian idealismItalian philosophyJ. Anthony BlairJain philosophyJapanese philosophyJean-Paul SartreJean BaudrillardJewish philosophyJohn LockeJohn RawlsJudeo-Islamic philosophies (800–1400)KalamKantianismKay Kaufman ShelemayKokugakuKorean ConfucianismKorean philosophyKrausismKyoto SchoolLaoziLaw of identityLegal positivismLegalism (Chinese philosophy)Libertarianism (metaphysics)LibertyLinguistic modalityList of Slovene philosophersList of Turkish philosophersList of metaphysiciansLogicLogical positivismLogical reasoningLucretiusLudwig WittgensteinLuis O. GómezMadhyamakaMartin HeideggerMarxist philosophyMaterialismMaterialistsMathematical objectMathematicsMatterMaya (religion)MazdakismMeaning (existential)Meaning (philosophy)Meaning of lifeMedieval LatinMedieval philosophyMeditations on First PhilosophyMegarian schoolMental representationMereologyMeta-ethicsMeta (prefix)MetaphilosophyMetaphysical naturalismMetaphysical necessityMetaphysicsMetaphysics (Aristotle)Michael DummettMiddle Eastern philosophyMiddle PlatonismMindMind–body dualismMind–body problemMithraismModern philosophyModern physicsModernismMohismMonadologyMonismMoral absolutismMoral nihilismMoral particularismMoral realismMoral skepticismMoral universalismMotionMoziMulla SadraMīmāṃsāNatural kindsNatural lawNatural scienceNaturalism (philosophy)Naturalized epistemologyNature (philosophy)Navya-NyāyaNeo-ConfucianismNeo-KantianismNeo-MarxismNeo-scholasticismNeoplatonismNeoplatonistsNeopythagoreanismNew ConfucianismNew historicismNewtonianismNicholas RescherNicolas MalebrancheNihilismNimbarka SampradayaNominalismNominalistsNonexistent objectsNorm (philosophy)Normative ethicsNothingNothingnessNumbersNyayaNyāya SūtrasOakObject (philosophy)ObjecthoodObjective idealismObjectivismObjectivity (philosophy)OccamismOld FrenchOne Thousand and One NightsOntological argumentOntological commitmentsOntological differenceOntologyOrdinary language philosophyOusiaOutline of philosophyP. F. StrawsonPakistani philosophyPantheismParmenidesParticle physicsParticularPatternPaul GuyerPegasusPerceptionPeripatetic schoolPeter LamarquePeter van InwagenPhenomenalismPhenomenology (philosophy)Philosophical methodologyPhilosophical pessimismPhilosophical realismPhilosophical skepticismPhilosophyPhilosophy in CanadaPhilosophy in MaltaPhilosophy in TaiwanPhilosophy of Friedrich NietzschePhilosophy of Søren KierkegaardPhilosophy of educationPhilosophy of informationPhilosophy of languagePhilosophy of mathematicsPhilosophy of matterPhilosophy of mindPhilosophy of psychologyPhilosophy of religionPhilosophy of sciencePhilosophy of selfPhilosophy of space and timePhysical objectPhysicalismPlatoPlatonic AcademyPlatonic formPlatonic formsPlatonistsPlotinusPolitical philosophyPositivismPossibilism (philosophy)Possible worldPost-structuralismPostanalytic philosophyPostcritiquePosthumanismPostmodern philosophyPotentiality and actualityPractical philosophyPragmatismPrakritiPre-Socratic philosophyPredicate logicPredication (philosophy)Presocratic philosophyPrime numberPrincipleProblem of intentional inexistenceProcess philosophyProclusProlegomena to Any Future MetaphysicsProperty (philosophy)PudgalavadaPurushaPyrrhonismPythagoreanismQualiaQuality (philosophy)Quantification (science)Quantifier (logic)Quietism (philosophy)R. G. CollingwoodRationalismRealityReductionismReformed epistemologyRelation (philosophy)Relations (philosophy)RelativismRenaissance humanismRenaissance philosophyRené DescartesRolf-Peter HorstmannRomanian philosophyRonald McDonaldRudolf CarnapRussian cosmismRussian philosophySamkhyaSanta ClausSapir–Whorf hypothesisSarah CoakleySarvastivadaSat Chit AnandaSaul KripkeSautrāntikaScholasticismSchool of NamesSchool of NaturalistsSchool of the SextiiScientific anti-realismScientific realismScientific skepticismScientismScotismScottish philosophySecond SophisticSelfSet (mathematics)Sherlock HolmesShuddhadvaitaSimone de BeauvoirSimulacra and SimulationSingular termSocial constructionismSocial contractSocial philosophySocial sciencesSocialismSociologySocratesSolipsismSophistSophist (dialogue)SoulSpaceSpace-timeSpanish philosophySpinozismSpiritualism (philosophy)Standard ModelStoicismString (physics)String theoryStructuralismSubject and object (philosophy)Subjective idealismSubjectivismSubjunctive possibilitySubstance theorySubstantial formSufi philosophySunflowerSvatantrika–Prasaṅgika distinctionSystemicsSyādvādaSøren KierkegaardTaoismTeleological argumentTeleologyThalesThe MoonThe Phenomenology of SpiritThe World as Will and RepresentationThe problem of evilTheoretical philosophyTheory of categoriesTheory of descriptionsTheory of formsThick conceptThomas AquinasThomas ReidThomismThoughtThree marks of existenceTiantaiTibetan BuddhismTimaeus (dialogue)TimeTransactionalismTranscendental idealismTranscendentalismTruthTruthmaker theoryType theoryType–token distinctionUbuntu philosophyUniqueness quantificationUniversal (metaphysics)UniversalsUnobservableUtilitarianismVaisheshikaValue (ethics)Value theoryVedantaVedicVienna CircleVietnamese philosophyVirtue ethicsVishishtadvaitaWayne WaxmanWestern MarxismWestern philosophyWhy is there anything at all?Willard Van Orman QuineXuanxueYangismYoga Sutras of PatanjaliYogacharaYugoslav philosophyZenZoroastrianismZurvanismĀjīvikaŚūnyatā
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