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Life & Wisdom Quote by Arthur C. Clarke

"If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong"

About this Quote

Clarke slips a scalpel between two kinds of authority: the kind that opens doors, and the kind that locks them. The line flatters the “elderly but distinguished” scientist just long enough to set a trap. Yes, experience earns a presumption of competence about what can be done with the tools and laws we already understand. But the moment that same authority declares a hard boundary - impossible - Clarke treats it as an emotional tell, not a rational verdict. “Impossible” here isn’t physics; it’s psychology wearing a lab coat.

The intent is less anti-science than anti-complacency. Clarke, a science-fiction writer who built narratives out of yesterday’s absurdities becoming today’s infrastructures, knew how often scientific progress arrives as an embarrassment to the gatekeepers. The subtext: expertise ages into risk management. Reputation becomes a conservative force; the distinguished mind starts defending a map it once helped redraw. Declaring something possible costs little. Declaring it impossible polices status, funding, and the story a field tells about itself.

Context matters: Clarke wrote in a century where flight, nuclear power, space travel, computing, and communications all went from speculative to mundane within a single lifespan. That compression makes “impossible” look like a historically naive word. The wit is in the asymmetry - “almost certainly” versus “very probably” - which reads like a statistical joke and a moral one: trust elders for what they’ve mastered, distrust them for what threatens their mastery. It’s a warning label for innovation culture, aimed at the respectable naysayer inside every institution.

Quote Details

TopicScience
Source
Verified source: Oxford Treasury of Sayings and Quotations (Susan Ratcliffe, 2011)ISBN: 9780199609123 · ID: IYOcAQAAQBAJ
Text match: 98.10%   Provider: Google Books
Evidence:
... If an elderly but distinguished scientist says that something is possible he is almost certainly right , but if he says that it is impossible he is very probably wrong . Arthur C. Clarke 1917-2008 : in New Yorker 9 August 1969 ; see ...
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Citation Formats

APA Style (7th ed.)
Clarke, Arthur C. (2026, February 8). If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong. FixQuotes. https://fixquotes.com/quotes/if-an-elderly-but-distinguished-scientist-says-6466/

Chicago Style
Clarke, Arthur C. "If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong." FixQuotes. February 8, 2026. https://fixquotes.com/quotes/if-an-elderly-but-distinguished-scientist-says-6466/.

MLA Style (9th ed.)
"If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong." FixQuotes, 8 Feb. 2026, https://fixquotes.com/quotes/if-an-elderly-but-distinguished-scientist-says-6466/. Accessed 12 Feb. 2026.

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About the Author

Arthur C. Clarke

Arthur C. Clarke (December 16, 1917 - March 19, 2008) was a Writer from United Kingdom.

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