"All men are liable to error; and most men are, in many points, by passion or interest, under temptation to it"
About this Quote
The second clause sharpens the blade: “most men” aren’t merely mistaken by accident; they’re nudged, steadily, by “passion or interest.” Locke is pointing at the machinery that manufactures belief. People don’t just arrive at wrong ideas; they’re recruited into them by desire, fear, loyalty, pride, money. “Temptation” is a moral word, but he uses it to describe cognition, implying that thinking is a field of ethical risk. Your mind is not a neutral instrument; it has appetites.
The subtext is institutional. This is a case for humility as a civic technology: toleration, open debate, limits on power, and procedures that assume bias. In a Europe still haunted by religious wars and authoritarian claims to certainty, Locke’s skepticism isn’t fashionable detachment; it’s damage control. He’s arguing that since error has incentives, we need structures that reduce the payoff for self-serving certainty and make correction possible without bloodshed.
Quote Details
| Topic | Ethics & Morality |
|---|---|
| Source | Verified source: An Essay Concerning Human Understanding (John Locke, 1690)
Evidence:
All men are liable to error, and most men are in many points, by passion or interest, under temptation to it. (Book IV, Chapter XX ("Of Wrong Assent, or Error"), §17 ("IV. Authority")). This wording appears in Locke’s own text in the discussion of "Wrong measures of probability" under the subsection on "Authority". In the Project Gutenberg transcription (based on the 2nd edition; Volume 2 contains Books III–IV), the sentence occurs in Book IV, Chapter XX, in the paragraph beginning "The tenet has had the attestation of reverend antiquity..." and immediately follows the line "A man may more justifiably throw up cross and pile for his opinions...". Wikisource also preserves the same context and attributes it to Book IV (near the end of Chapter XIX / transition into the discussion that continues in Chapter XX depending on edition/segmentation). |
| Cite |
Citation Formats
APA Style (7th ed.)
Locke, John. (2026, February 26). All men are liable to error; and most men are, in many points, by passion or interest, under temptation to it. FixQuotes. https://fixquotes.com/quotes/all-men-are-liable-to-error-and-most-men-are-in-32122/
Chicago Style
Locke, John. "All men are liable to error; and most men are, in many points, by passion or interest, under temptation to it." FixQuotes. February 26, 2026. https://fixquotes.com/quotes/all-men-are-liable-to-error-and-most-men-are-in-32122/.
MLA Style (9th ed.)
"All men are liable to error; and most men are, in many points, by passion or interest, under temptation to it." FixQuotes, 26 Feb. 2026, https://fixquotes.com/quotes/all-men-are-liable-to-error-and-most-men-are-in-32122/. Accessed 11 Mar. 2026.







