In the comic book "Le chat du rabbin", the rabbi's cat gets into an argument with the rabbi's rabbi about whether he should be allowed to have a bar-mitzvah. Then the cat tells the rabbi's rabbi that he, the cat, is God who has taken the appearance of a cat as a challenge for him. The cat proceeds to tell the rabbi's rabbi that he is very dissatisfied with his behavior, that he has been as dogmatic and closed-minded with him as some Christians are with Jews. The rabbi's rabbi kneels before the cat and asks for forgiveness. The cat then answers that it was just a joke, that he is not really God but just a cat after all, and that the rabbi's rabbi can stand back up from his knees. The rabbi's rabbi gets angry and says that the cat should be drowned. The cat's rabbi asks the rabbi's rabbi whether a rabbi ought not to systematically accept contradiction from his students, and whether that is not the very principle of Talmudic teaching.
I like that principle but I'm not sure how much contradiction I can deal with.
Once I was teaching a freshman class in France. Some students were not paying attention. The atmosphere grew increasingly chaotic. Paper airplanes were flying around the amphitheater. I heard a couple of pieces of chalk being thrown as I was writing on the board. Then, inexplicable muffled laughter broke behind my back. And again. I looked sideways, and saw the red light of a laser pointer shining on the board next to me. Someone was acting up with a laser pointer! More laughter every time I turned to write on the board. My temper started rising (it is usually slow to trigger but, once awakened, is quick to rise). Finally I turned around quickly, just in time to see the source of the merriment.
-"Yes, you. Get out of here."
-"Just get out. I have had enough of you for today. You have been distracting the entire class and preventing other people from paying attention to the lecture. Enough! Pick up your stuff and leave, right now. You can ask one of your friends to explain the material of the rest of today's lecture to you."
I had no idea what I would do next if he didn't leave, but I was angry enough that I didn't care. Fortunately the student got up, slowly, and left reluctantly.