Ah, the contrarian, Hazlit, once again. The Golden Rule, by those words, or words that have the same meaning, is one of the first tenets of most faiths, which is essentially, "Treat others as you wish to be treated." That is not revenge; it is consideration. If you have to fear that others may return to you the behavior that you dealt to them, then that fear itself is proof that you have behaved badly. What rules of life do you teach your children?