It is too late to throw water on the cinders when the house is burnt down.
More Danish Proverbs:
He who is scared by words, has no heart for deeds.Danish
To a friend's house the road is never long.
Danish
Damage suffered makes you knowing, but seldom rich.
Danish
Every man's friend is every man's fool.
Danish
He does not live in this world that can skin a grindstone.
Danish
When the manger is empty the horses fight.
Danish