"The only source of knowledge is experience"
About this Quote
The subtext is almost combative: equations are beautiful, institutions are prestigious, philosophers can argue forever, but none of it counts until the world agrees. That posture makes sense in a career defined by audacious thought experiments and a relentless demand that theories cash out in observable consequences. Even Einstein’s most abstract work (relativity’s rearrangement of time and space) gained its cultural force because it could be tested, confirmed, and used. “Experience” here is broader than lab work; it includes measurement, observation, and the imaginative simulations that make a prediction legible before an instrument can.
There’s also a quiet self-critique embedded in the absolutism of “only.” Einstein loved mathematics and speculation, but he knew how easily a clever mind can mistake elegance for truth. The line is a prophylactic against that temptation, a reminder that knowledge isn’t a badge you inherit or a system you merely memorize. It’s something you earn through friction with the world: the stubborn, inconvenient, sanity-checking kind of experience that forces even genius to revise.
Quote Details
| Topic | Knowledge |
|---|---|
| Source | Later attribution: The The JavaScript Workshop (Joseph Labrecque, Jahred Love, Daniel..., 2019) modern compilationISBN: 9781838645885 · ID: d1jBDwAAQBAJ
Evidence:
... Albert Einstein \\Output < Uncaught SyntaxError: Unexpected identifier 13. You can use a literal string using ... The only source of knowledge is experience" is attributed to Albert Einstein' \\Output < The quote "The only source ... |
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Citation Formats
APA Style (7th ed.)
Einstein, Albert. (2026, February 7). The only source of knowledge is experience. FixQuotes. https://fixquotes.com/quotes/the-only-source-of-knowledge-is-experience-25331/
Chicago Style
Einstein, Albert. "The only source of knowledge is experience." FixQuotes. February 7, 2026. https://fixquotes.com/quotes/the-only-source-of-knowledge-is-experience-25331/.
MLA Style (9th ed.)
"The only source of knowledge is experience." FixQuotes, 7 Feb. 2026, https://fixquotes.com/quotes/the-only-source-of-knowledge-is-experience-25331/. Accessed 12 Feb. 2026.












