He who would catch a rogue must watch behind the door.
More Dutch Proverbs:
It's a poor heart that never rejoices.Dutch
Better a dog fawn on you than bite you.
Dutch
It is easier to make a lady of a peasant girl than a peasant girl of a lady.
Dutch
If he won't carry the sack, give him a whack.
Dutch
All are not saints that go to church.
Dutch
Strain not your bow beyond its bent, lest it break.
Dutch