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Science Quote by Manfred Eigen

"A theory can be proved by experiment; but no path leads from experiment to the birth of a theory"

About this Quote

Eigen’s line is a quiet provocation dressed up as scientific humility: yes, science worships experiment, but the experiment doesn’t do the thinking for you. The first clause nods to the laboratory’s authority - proof, verification, the clean click of a result that lands where a hypothesis predicted. Then he flips the hierarchy. Data can ratify a theory, but it can’t midwife one into existence. The subtext is a warning to anyone who treats science as a vending machine: insert observations, receive insight.

Coming from a working scientist, the point isn’t mystical anti-empiricism; it’s a defense of the creative, often non-linear labor that gets scrubbed from the published record. Real theory-building is pattern recognition under uncertainty: choosing what to measure, deciding what counts as signal, daring to connect phenomena that don’t yet share a common language. Experiments generate constraints and surprises, not inevitabilities. The birth of a theory requires a mind willing to impose structure, risk being wrong, and revise its own metaphors.

Context matters here: 20th-century science became increasingly instrument-heavy and data-rich, which can tempt institutions to equate “more measurement” with “more understanding.” Eigen pushes back against that technocratic fantasy. He’s also implicitly critiquing the myth of the purely objective scientist. Even the cleanest experiment is framed by prior ideas. The quote works because it restores agency - and responsibility - to the theorist, without denying the experiment’s power to humble them.

Quote Details

TopicScience
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Citation Formats

APA Style (7th ed.)
Eigen, Manfred. (2026, January 15). A theory can be proved by experiment; but no path leads from experiment to the birth of a theory. FixQuotes. https://fixquotes.com/quotes/a-theory-can-be-proved-by-experiment-but-no-path-102543/

Chicago Style
Eigen, Manfred. "A theory can be proved by experiment; but no path leads from experiment to the birth of a theory." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/a-theory-can-be-proved-by-experiment-but-no-path-102543/.

MLA Style (9th ed.)
"A theory can be proved by experiment; but no path leads from experiment to the birth of a theory." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/a-theory-can-be-proved-by-experiment-but-no-path-102543/. Accessed 11 Feb. 2026.

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No Path Leads from Experiment to the Birth of a Theory
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About the Author

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Manfred Eigen (May 9, 1927 - February 6, 2019) was a Scientist from Germany.

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