You can sell the devil if he is well cooked.
More French Proverbs:
He gains enough who loses sorrow.French
Every one takes his flogging in his own way.
French
The secret of two is God's secret, the secret of three is everybody's secret.
French
A good man is a man of goods.
French
The belly robs the back.
French
Gossipers are the devil's trumpeters.
French