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).
