Not the one where "He who has the gold rules."

But this one: "Do unto others as you would have others do unto you." It is the ultimate norm of high morality in our culture. Sure there are other morals by which we live, but this one phrase embodies our most cherished value: that we should treat people as we would like to be treated.
We are taught it from childhood. We learn it from our parents. We learn it at school. But more than any other place, we learn it in our churches because it comes straight from the Bible. If you don't want to be ripped off, don't rip off others. If you don't want your spouse to cheat on you, don't cheat on your spouse. If you don't want to be judged, don't judge.
Sometimes "Bad things happen to "Good" people", but almost always “Bad things happen to "Bad People"  all the time."
Now it's true we don't always abide by the Golden Rule. We often hurt others in ways we, ourselves, would not like perpetrated against us. Some of life's hardest lessons are actually reminders that we have treated another in a way we would hate to be treated ourselves.
Live by the Golden Rule and your life and everyone else's life around you will be happier.

Author Unknown