Never sell the bearskin till you have killed the bear.
More French Proverbs:
A gaunt brute bites sore.French
He is the devil's valet, he does more that he is ordered.
French
To know a man well one must have eaten a bushel of salt with him.
French
The tongue wounds more than a lance.
French
Who knows nothing doubts nothing.
French
A good dog hunts by instinct.
French