Carnap–Quine on Analyticity
Two Dogmas of Empiricism
Venue: Decade-long exchange; culminating in Quine's "Two Dogmas of Empiricism" (1951) and Carnap's reply, "Meaning Postulates" (1952).
The end of logical positivism, written by one of its own.
Carnap and Quine were friends and intellectual collaborators throughout the 1930s and 40s. Quine's "Two Dogmas of Empiricism" (1951) was a direct attack on two pillars of Carnap's logical empiricism: (1) the analytic/synthetic distinction, and (2) the verificationist reductionism of statements to immediate experience. Quine argued that no satisfactory non-circular definition of "analytic" could be given, and that verification cannot be confined to individual statements — it applies only to whole theories (the Duhem-Quine thesis). The paper effectively ended classical logical positivism. Carnap replied that "analytic" could be defined relative to a chosen language framework via meaning postulates; Quine's response held that any such relativisation merely names the problem. The debate restructured analytic philosophy and remains live.
Historical Context
Carnap had emigrated from Vienna in the 1930s and taught at Chicago and UCLA; Quine, his protégé in some respects, was at Harvard. Their correspondence (1932–1970) shows decades of mutual respect alongside sharpening disagreement.
Parties
Analytic statements (true in virtue of meaning) are distinct from synthetic ones (true in virtue of the world); each language framework fixes its own analyticity through meaning postulates; verification proceeds, even if holistically, against this framework.
Key arguments
- Analyticity is definable within a constructed language by stipulating meaning postulates ("all bachelors are unmarried" as a postulate).
- Frameworks are pragmatic choices; what counts as analytic depends on framework, but is non-trivially fixed once chosen.
- External questions (about the choice of framework) are pragmatic, not factual; internal questions (within a framework) have definite answers.
- Logical empiricism remains intact if one distinguishes properly between framework and content.
No non-circular definition of "analytic" can be given. Empirical content attaches to entire theories, not to individual statements. The analytic/synthetic distinction collapses; epistemology becomes naturalistic and holistic.
Key arguments
- Definitions of "analytic" via synonymy, semantic rules, or meaning postulates are all circular or framework-relative in unilluminating ways.
- Duhem-Quine thesis: empirical confirmation/refutation applies to whole theoretical webs, not isolated sentences.
- No statement is immune to revision in light of recalcitrant experience; even logic and mathematics are revisable.
- Web-of-belief image: beliefs form an interconnected fabric with empirical content distributed across it.
Allied schools
Dimensions Engaged
Information
Information · Granularity: is empirical content distributed across whole theories or localised in individual statements?
Observer
Observer · Knowledge Extent: holistic vs reductive accounts of how observation constrains belief.
Verdict in retrospect
Quine's critique substantially reshaped analytic philosophy; mainstream post-1960s analytic philosophy is largely post-positivist. But the analytic/synthetic distinction has had recent defenders (Boghossian, Russell), and contemporary work in philosophy of language often invokes refined versions of analyticity. The Carnap position has more defenders today than in the late 1950s.
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Further reading
- Quine, "Two Dogmas of Empiricism", *Phil. Rev.* 60 (1951)
- Carnap, "Meaning Postulates", *Phil. Studies* 3 (1952)
- Creath (ed.), *Dear Carnap, Dear Van: The Quine-Carnap Correspondence* (1990)