Nothing falls into the mouth of a sleeping fox.
More French Proverbs:
To one who has a pie in the oven you may give a bit of your cake.French
White meal is not got out of a coal-sack.
French
Men make laws; women make morals.
French
Fools never get grey hair.
French
Turn your tongue seven times before speaking.
French
Touch not another man's money, for the most honest never added to it.
French