You cannot make people honest by an act of parliament.
More English Proverbs:
When flatters meet, the devil goes to dinner.English
Old saws speak truth.
English
A creaking cart goes long on the wheels.
English
An old cart well used may outlast a new one abused.
English
Don't cross your bridges before you come to them.
English
The ship that will not obey the helm will have to obey the rocks.
English