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Daily Inspiration Quote by William Kingdon Clifford

"Nor is it that truly a belief at all which has not some influence upon the actions of him who holds it"

About this Quote

Belief, for Clifford, is not a private ornament of the mind; it is a motor. His line draws a hard border between convictions that cost us something and the cheap mental souvenirs we collect for comfort, identity, or dinner-party conversation. The barb is subtle: if a “belief” doesn’t tug on your behavior, it’s not quite belief, just rehearsal. Clifford’s mathematician’s instinct shows in the implicit demand for proof-by-conduct. An unacted-on proposition isn’t merely harmless; it’s epistemically unserious.

The intent sits inside Victorian Britain’s booming marketplace of ideas, where scientific authority, religious tradition, and imperial confidence all competed to define what counted as knowledge. Clifford, famous for arguing that it is wrong to believe on insufficient evidence, isn’t making a self-help point about authenticity. He’s making a moral claim about responsibility. Because beliefs are upstream of actions, treating belief as consequence-free becomes a kind of negligence. Even “purely theoretical” convictions seep into what we fund, who we fear, what we excuse, and which harms we normalize.

The subtext is a warning to the respectable skeptic and the comfortable believer alike: you don’t get to quarantine your worldview from the world. Clifford collapses the alibi that faith can be “personal” and therefore beyond critique. If it influences action, it enters the public realm; if it doesn’t, it’s closer to fantasy than faith. The line works because it refuses sentiment and insists on accountability: show me the behavior, and I’ll show you the belief.

Quote Details

TopicEthics & Morality
SourceWilliam K. Clifford, "The Ethics of Belief" (essay, 1877), reprinted in Lectures and Essays (1879); contains the line beginning "Nor is it that truly a belief at all..."
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Citation Formats

APA Style (7th ed.)
Clifford, William Kingdon. (2026, January 15). Nor is it that truly a belief at all which has not some influence upon the actions of him who holds it. FixQuotes. https://fixquotes.com/quotes/nor-is-it-that-truly-a-belief-at-all-which-has-19580/

Chicago Style
Clifford, William Kingdon. "Nor is it that truly a belief at all which has not some influence upon the actions of him who holds it." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/nor-is-it-that-truly-a-belief-at-all-which-has-19580/.

MLA Style (9th ed.)
"Nor is it that truly a belief at all which has not some influence upon the actions of him who holds it." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/nor-is-it-that-truly-a-belief-at-all-which-has-19580/. Accessed 10 Feb. 2026.

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About the Author

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William Kingdon Clifford (May 4, 1845 - March 3, 1879) was a Mathematician from England.

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