Who said “If an idiot were to tell you the same story every day for a year, you would end by…”?

Misattributed

Not Horace Mann. It's commonly credited to them, but the evidence shows it isn't theirs.

What the research foundListed as misattributed to Horace Mann; no source in their known works.

Evidence: Wikiquote · How we check

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“If an idiot were to tell you the same story every day for a year, you would end by believing it.”
MisattributedListed as misattributed to Horace Mann; no source in their known works. · evidenceHabit
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Cite this quote

APA

“If an idiot were to tell you the same story every day for a year, you would end by believing it.” [Quotation attributed to Horace Mann]. (n.d.). Famous Quotations Network. Retrieved October 24, 2026, from https://www.famous-quotations.com/quotes/20664-if-an-idiot-were-to-tell-you-the/

MLA

“If an idiot were to tell you the same story every day for a year, you would end by believing it.” Attributed to Horace Mann. Famous Quotations Network, https://www.famous-quotations.com/quotes/20664-if-an-idiot-were-to-tell-you-the/. Accessed 24 Oct. 2026.

Chicago

“If an idiot were to tell you the same story every day for a year, you would end by believing it.” Attributed to Horace Mann. Famous Quotations Network. Accessed October 24, 2026. https://www.famous-quotations.com/quotes/20664-if-an-idiot-were-to-tell-you-the/.