It is too late to lock the stable door when the horses have already been stolen.
More Dutch Proverbs:
A wolf hankers after sheep even at his last gasp.Dutch
Genius is an infinite capacity for taking pains.
Dutch
Every little helps to lighten the freight, said the captain, as he threw his wife overboard.
Dutch
A thief passes for a gentleman when stealing has made him rich.
Dutch
In prosperity think of adversity.
Dutch
Well started is half won.
Dutch