| The Columbia World of Quotations. 1996. |
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| NUMBER: | 2708 |
| QUOTATION: | There are two things which cannot be attacked in front: ignorance and narrow-mindedness. They can only be shaken by the simple development of the contrary qualities. They will not bear discussion. |
| ATTRIBUTION: | John Emerich Edward Dalberg, 1st Baron Acton (1834–1902), British historian. Letter, January 23, 1861. Lord Acton and His Circle, letter 74, ed. Abbot Gasquet (1906). |
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| | | The Columbia World of Quotations. Copyright © 1996 Columbia University Press. |
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