"I hold that the propositions embodied in natural science are not derived by any definite rule from the data of experience, and that they can neither be verified nor falsified by experience according to any definite rule"
About this Quote
The intent is both epistemological and cultural. Mid-20th-century philosophy of science was busy trying to formalize knowledge: logical positivists looking for verification criteria, Popper offering falsification as the clean demarcation line. Polanyi, a working scientist turned philosopher, had watched real discovery happen in messier ways: hunches, aesthetic judgments about elegance, apprenticeship, and the tacit know-how that labs transmit but papers can’t fully encode. His phrasing is almost legalistic, but the subtext is human: scientific knowing involves commitment, skill, and interpretation before it involves proof.
What makes the quote work is its refusal of easy villains. Polanyi isn’t saying experience is irrelevant; he’s saying experience doesn’t dictate meaning without a trained mind to frame it. Data do not speak; scientists teach themselves what counts as signal, what counts as noise, what questions are worth asking. In an era still tempted by technocratic certainty, he’s quietly reasserting something radical: science is powerful not because it is mechanical, but because it is a disciplined, communal art of judgment.
Quote Details
| Topic | Reason & Logic |
|---|---|
| Source | Michael Polanyi, Personal Knowledge: Towards a Post-Critical Philosophy (1958) — passage expressing Polanyi's view that scientific propositions are not derived or verifiable/falsifiable from experience by any definite rule. |
| Cite |
Citation Formats
APA Style (7th ed.)
Polanyi, Michael. (2026, January 17). I hold that the propositions embodied in natural science are not derived by any definite rule from the data of experience, and that they can neither be verified nor falsified by experience according to any definite rule. FixQuotes. https://fixquotes.com/quotes/i-hold-that-the-propositions-embodied-in-natural-56818/
Chicago Style
Polanyi, Michael. "I hold that the propositions embodied in natural science are not derived by any definite rule from the data of experience, and that they can neither be verified nor falsified by experience according to any definite rule." FixQuotes. January 17, 2026. https://fixquotes.com/quotes/i-hold-that-the-propositions-embodied-in-natural-56818/.
MLA Style (9th ed.)
"I hold that the propositions embodied in natural science are not derived by any definite rule from the data of experience, and that they can neither be verified nor falsified by experience according to any definite rule." FixQuotes, 17 Jan. 2026, https://fixquotes.com/quotes/i-hold-that-the-propositions-embodied-in-natural-56818/. Accessed 12 Feb. 2026.








