Don't be a know-it-all
Don’t give the sacred relic to pigs and dogs; it might trample it and then turn around and bite you There is no need to tell them everything you know. People dislike having someone around them who knows more than they do; it makes them irritated. Even if what you say is correct, you cannot change these people. Unless they want to learn themselves, there is no way around it. You either keep quiet, or you speak their language. ...