If you wrestle with a collier you will get a blotch.
More French Proverbs:
Two of a kind, whate'er they be.French
Who sows thorns should not go barefoot.
French
Take an ox by his horn, a man by his word.
French
He who lends to a friend loses twice.
French
It is more difficult for beautiful women to stay chaste.
French
The bagpipe never utters a work till its belly is full.
French