If you have a problem with someone you have to go after them, and it's not necessarily to teach that person a lesson, it's to teach all the people that are watching a lesson that you don't take crap, and if you do take crap, you're just not going to well
My books have sold largely in England, have been translated into many languages, and passed through several editions in foreign countries. I have heard it said that the success of a work abroad is the best test of its enduring value. I doubt whether this is at all trustworthy; but judged by this standard my name ought to last for a few years.