"The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge"
About this Quote
Boorstin, a historian of ideas and public life, wrote in a century defined by mass information and institutional authority: experts, textbooks, bureaucracies, and later the churn of media. In that setting, knowledge isn’t just truth; it’s also a social asset. The subtext is political as much as intellectual: societies don’t get stuck because people lack facts, but because they become invested in the frameworks that organize those facts. A mistaken paradigm can be defended as identity, status, or common sense.
The craft of the sentence does the heavy lifting. “Greatest obstacle” gives it moral urgency, then Boorstin yanks the expected culprit away with the dash. That pause mimics the moment discovery requires: a suspension of certainty. The phrase “illusion” sharpens the critique without insulting the listener outright. He’s not calling people ignorant; he’s calling them prematurely satisfied.
It’s also a warning about the historian’s own profession. The archive can make you feel omniscient. Boorstin reminds us that discovery begins when we treat our knowledge as provisional, not proprietary.
Quote Details
| Topic | Knowledge |
|---|---|
| Source | Verified source: The Washington Post: The 6 O'Clock Scholar (Daniel J. Boorstin, 1984)
Evidence: The greatest obstacle to discovery is not ignorance--it is the illusion of knowledge. (Style section, p. K8 (per TodayInSci; online archive has no page label)). This wording appears as a direct quotation of Boorstin in Carol Krucoff’s Washington Post profile/interview of him as Librarian of Congress. Publication date in the Post archive is January 28, 1984, and the article URL path indicates the issue date January 29, 1984; the quote appears in the body of the article. This is the earliest PRIMARY, attributable publication I could verify for the exact 'greatest obstacle to discovery' wording. A closely related (and earlier-in-his-work) version appears in Boorstin’s book The Discoverers (Random House, 1983): 'The great obstacle to discovering the shape of the earth, the continents, and the oceans was not ignorance, but the illusion of knowledge.' That book passage is often the source of later paraphrases, but it is not the exact wording you supplied. Other candidates (1) If Ignorance Is Bliss, Why Aren't There More Happy People? (John Lloyd, John Mitchinson, 2009) compilation95.0% ... The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge . DANIEL J. BOORSTIN T'aint... |
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Citation Formats
APA Style (7th ed.)
Boorstin, Daniel J. (2026, February 10). The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge. FixQuotes. https://fixquotes.com/quotes/the-greatest-obstacle-to-discovery-is-not-132199/
Chicago Style
Boorstin, Daniel J. "The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge." FixQuotes. February 10, 2026. https://fixquotes.com/quotes/the-greatest-obstacle-to-discovery-is-not-132199/.
MLA Style (9th ed.)
"The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge." FixQuotes, 10 Feb. 2026, https://fixquotes.com/quotes/the-greatest-obstacle-to-discovery-is-not-132199/. Accessed 12 Feb. 2026.

















