Who said “Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied…”?

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Horace Mann. A published source records them saying or writing it.

SourceThoughts Selected from the Writings of Horace Mann (1867)

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“Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied by the verities of knowledge.”
— Horace Mann
VerifiedThoughts Selected from the Writings of Horace Mann (1867) · evidenceIgnorance
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For academic work, cite the original where you can: Thoughts Selected from the Writings of Horace Mann (1867).

APA

Mann, H. (n.d.). Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied by the verities of knowledge. [Quotation]. Famous Quotations Network. Retrieved October 24, 2026, from https://www.famous-quotations.com/quotes/17074-ignorance-breeds-monsters-to-fill-up-all-the/

MLA

Mann, Horace. “Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied by the verities of knowledge.” Famous Quotations Network, https://www.famous-quotations.com/quotes/17074-ignorance-breeds-monsters-to-fill-up-all-the/. Accessed 24 Oct. 2026.

Chicago

Mann, Horace. “Ignorance breeds monsters to fill up all the vacancies of the soul that are unoccupied by the verities of knowledge.” Famous Quotations Network. Accessed October 24, 2026. https://www.famous-quotations.com/quotes/17074-ignorance-breeds-monsters-to-fill-up-all-the/.

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