If you would make a thief honest, trust him.
More Spanish Proverbs:
Wherever you are, do as you see done.Spanish
Walk until the blood appears on the cheek, but not the sweat on the brow.
Spanish
There is no thief without a receiver.
Spanish
He who goes to law for a sheep loses his cow.
Spanish
Look not out for dead men's shoes.
Spanish
Much talking, much erring.
Spanish