The best company must part, as King Dagobert said to his hounds.
More French Proverbs:
He is like a singed cat, better than he looks.French
He who has nothing fears nothing.
French
Better the second husband of a widow than the first.
French
A good cause needs help.
French
Princes keep good reckoning, they never lose anything.
French
Don't shut the barn door after the horse is stolen.
French