I prefer rogues to imbeciles, because they sometimes take a rest.
Alexandre Dumas, fils

Build a system that even a fool can use, and only a fool will want to use it.
Shaw's System

There are more Fools than Knaves in the World, else the Knaves would not have enough to live on.
Samuel Butler, c. 1660

"Eventus stultorum magister"
"The outcome is the schoolmaster of fools." (Anyone can be wise after the event.)
Livy xxii 39

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