Carnap vs Heidegger on Metaphysics
"The Elimination of Metaphysics Through Logical Analysis of Language"
Venue: Heidegger, "Was ist Metaphysik?" (1929); Carnap, "Überwindung der Metaphysik durch logische Analyse der Sprache" (1932).
The cleanest analytic/continental crystallisation: nonsense or fundamental ontology?
Heidegger's 1929 inaugural lecture at Freiburg, "What is Metaphysics?", expounded "the Nothing" (*das Nichts*) as the ontological condition for the disclosure of beings — most famously: "the Nothing itself nothings" (*das Nichts selbst nichtet*). Carnap's 1932 essay used Heidegger's lecture as the exhibit for his argument that classical metaphysics consists of grammatical pseudo-statements with no cognitive content. By a logical analysis Carnap claimed the sentence is meaningless ("nothing" is not a name; the verb "to nothing" doesn't exist; the sentence is grammatically well-formed but semantically empty). The exchange — though both parties largely ignored each other thereafter — is the crystallising moment of the 20th-century analytic/continental split. Each side continues to refer to it as the canonical illustration of the other side's errors.
Historical Context
Carnap and Heidegger were near-contemporaries at Vienna and Freiburg respectively; both were aware of each other's work but moved in different philosophical worlds. Heidegger's 1933 rectorship and Nazi affiliation permanently politicised the reception of his work in the analytic tradition.
Parties
Metaphysics, properly understood, is the questioning of beings as a whole from the standpoint of Being. The Nothing is not a logical operator but the ground on which beings emerge as beings.
Key arguments
- Logic's "nothing" is the bare negation of beings; ontological nothing is the encompassing horizon that makes beings stand out as beings.
- Anxiety (*Angst*) reveals the Nothing; the experience is constitutive of human Dasein, not a logical curiosity.
- The question of Being precedes any logical analysis; logic is a derivative discipline grounded in a more original disclosure.
- Carnap's critique presupposes the very metaphysics it claims to eliminate — that meaning is exhausted by logical-empirical content.
Allied schools
Metaphysical statements that lack empirical verification conditions and are not analytic are cognitively meaningless. Heidegger's "the Nothing itself nothings" is grammatically well-formed but semantically empty.
Key arguments
- Logical analysis of language: a meaningful statement is either analytic (true by meaning) or empirically verifiable.
- Pseudo-statements arise from misuse of grammatical forms: treating "nothing" as a name and inventing the verb "to nothing" produces a sentence devoid of cognitive content.
- Heidegger's sentence may have emotive or aesthetic value, but cannot be true or false; it does not belong to the domain of cognitive discourse.
- The Vienna Circle's methodological commitment is to replace classical metaphysics with logical analysis of scientific language.
Allied schools
Dimensions Engaged
Observer
Observer · Knowledge Extent: are there non-propositional forms of disclosure constitutive of human existence?
Information
Information · Ontological Status: is meaning exhausted by verification conditions, or does language carry irreducibly ontological content?
Verdict in retrospect
Neither side persuaded the other or their successors. Logical positivism's strong verification principle was eventually abandoned (in part through Quine's "Two Dogmas," 1951); Heideggerian thinking continued to develop in the continental tradition. The exchange remains the standard illustration of the analytic/continental divide — each tradition still finds its self-definition partly in opposition to what the other took as fundamental.
Related Debates
Sharing parties or aligned schools.
Related Experiments
Experiments that share dimensions and/or aligned schools with this debate.
Other Personas Aligned With This Debate
Ranked by declared-influence weight in the schools either party is allied with. The named parties themselves are excluded — they're already listed above.
Works Most Aligned With This Debate
Ranked by declared-influence weight in the schools either party is allied with.
Related Films
Films engaging the same dimensions as this debate.
Related Contemporary Dilemmas
Dilemmas that engage the same dimensions as this debate.
Further reading
- Heidegger, "What is Metaphysics?" (1929; in *Pathmarks*, 1998)
- Carnap, "The Elimination of Metaphysics" (1932; tr. in Ayer, *Logical Positivism*, 1959)
- Friedman, *A Parting of the Ways: Carnap, Cassirer, and Heidegger* (2000)