He who knows a knave, makes no bid for him.
More Danish Proverbs:
Strangers' meat is the greatest treat.Danish
Many dogs are the death of the hare.
Danish
He scolds most that can hurt the least.
Danish
For a good dinner and a gentle wife you can afford to wait.
Danish
He must be ill-favoured who scares the devil.
Danish
Old swine have hard snouts, old oxen hard horns.
Danish