It is too late to lock the stable door when the steed is stolen.
More French Proverbs:
A good dog never barks at fault.French
When thieves fall out the thefts are discovered.
French
A spaniel, a wife, and a walnut tree, The more you beat 'em the better they be.
French
Too late to grieve when the chance is past.
French
The head and feet keep warm; the rest will take no harm.
French
A covetous woman deserves a swindling gallant.
French