I second this :P

Just from listening to this man speak I would never take any of his classes. By the way he talks in every one of his comebacks he sounds very arrogant. I hate to tell you sir, but your not God, and don't act like Him. Also, maybe you need to step back from yourself and "clear your mind" and ask yourself, "is there any possibility that there is truth to what one of these people has said about me?" And then you need to try to change it because if you don't do something, your going to be losing more students than you are gaining.
P.S. Why would it matter if the students want to leave anonymous comments? Maybe they do because you scare them off with your arrogant personality. The point of the matter is, you did something or acted in a way that your students did not like, and therefore need to change that if you want people to like you. Simple as that. Nobody will leave you bad comments for no reason, I promise.