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l'acqua cheta rovina i ponti *
* calm water ruins the bridges
Proverb used here and there by Almost Everyone
Referring to the erosive power of water, it's used to describe people that come across as quiet, but they do their work without being noticed (the work having a negative connotation).
"Hai sentito che ha combinato Luca? É riuscito a fregare tutti! Chi lo avrebbe mai detto!" "Eh, l'acqua cheta rovina i ponti!"
"Have you heard about Luca? He screwed everybody! Who could have possibly told!" "Eh, calm water ruins the bridges!"
