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A linguist would be shocked to learn that if a set is not closed this does not mean that it is open, or again that "E is dense in E" does not mean the same thing as "E is dense in itself".

John Edensor Littlewood
Learning, Mean, Math
John Edensor Littlewood (1953). “A mathematicians's miscellany”
A linguist would be shocked to learn that if a set is not closed this does not mean that it is open, or again that E is dense in E does not mean the same thing as E is dense in itself.