<human>: I've known Wilfred for about a few months now and he has a habit of "debating" people. I say "debating" because it's always topics within philosophical thought experiments or rely on anecdotal evidence. These "debates" are usually filled with fallacies and him interrupting/speaking over people. 

He once debated me about me being agnostic. He claimed it was stupid to wander through life waiting for a sign that a god existence. I explained that I'm apathetic to religion and don't really think about god much. To which to further tried to explain that being agnostic was stupid. 

Recently he got into a "debate" with our Resident Director (RD). I, and several others, got dragged into this debate because both parties wanted a diverse jury/moderators.  

The debate issue was simply that my RD was offended/saddened/annoyed by a somewhat controversial image. Wilfred was arguing that my RD's emotions were unprogressive (and stupid). Wilfred believed that if he talked enough about why being offended by the image was inappropriate, he could change said emotion. It soon devolved into whether or not RD's emotions were valid. It ended up with people wanting to eat dinner, thus ending the debate. 

During the debate, I pointed out Wilfred was using several fallacies (false dichotomy, strawman, red herrings, etc). This prompted Wilfred to seek me out to explain the fallacies he made during the debate and to debate further. I would have listed them to help him out, but he's the type to believe he is right, and everyone else is wrong. 

A few minutes ago, he followed me to my door (as we live in the same dorm). He kept asking more and more about the debate and pretty much get chances to prove he is correct. I in turn, closed the door on him. 

How do I politely decline and make it stick that I do not wish to debate further?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Acquaintance likes to "debate" people, but doesn't like it when he isn't right. Has been annoying me for a chance to debate further. I don't want to and shut the door on him.