"It’s Easier To Fool People Than To Convince Them That They’ve Been Fooled" needs true source


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"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:
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.
I'm curious to find the correct source, because it is a neat, but unfortunate idea.
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I like what you found, Deirdre.. That is very close.
I doubt there is a translation issue, because Mr Clemens wrote in english...and here we are.
Perhaps someone simplified it at some point.... and therefore the simplified version, stuck.
(it got dumbed-down for an easy internet swallow.)
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This reminded me of the saying (in various wordings) that a lie will travel round the world before the truth can get its boots on. This one has also been attributed to Mark Twain, who seems to be a quote-magnet like Einstein or Churchill. In fact it is at least a few decades older than anything by Mark Twain, as shown in this article by Quote Investigator:


[By 'quote-magnet' I mean a famous person to whom quotes are often wrongly attributed, not a fridge magnet with quotes on it, which is apparently a thing.]
Perhaps someone simplified it at some point.
perhaps someone was being punny. ie fool people with a fake/rewritten quote, then as Twain did say "and how hard to undo that work again"

or she/he just misremembered a quote she/he read in highschool.