TITLE: Quote about errors in math writing
QUESTION [11 upvotes]: I'm searching for the original reference of a quote that went something like:
"Errors in a mathematics text add an element of surprise to an otherwise predictable plot."
I believe it may have been from the 1700s or 1800s.

REPLY [4 votes]: A resource might be
Maurice Lecat, Erreurs de mathématiciens des origines à nos jours, Bruxelles : Castaigne, 1935 
Cheers, Scott