Leifer
Senior Member.
"It's Easier To Fool People Than To Convince Them That They've Been Fooled"
.....has been attributed to Mark Twain, but online people cannot find a specific Twain source.Quote Investigator says...
Quote Investigator: QI has found no substantive evidence that Mark Twain (Samuel Clemens) authored this remark. The earliest close match known to QI appeared in a tweet from @Joreth on January 10, 2011.......
and further down they cite a similar quote, where in 1647 Baltasar Gracián wrote "Oráculo Manual y Arte de Prudencia" ("The Art of Worldly Wisdom") which included a germane discussion of fools stubbornly clinging to incorrect beliefs:
I'm curious to find the correct source, because it is a neat, but unfortunate idea.Every blockhead is thoroughly persuaded that he is in the right, and every one who is all too firmly persuaded is a blockhead, and the more erroneous is his judgment the greater is the tenacity with which he holds it.
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