Professors

I went in to see one of my professors about a paper. I figure professors love it when you come into see them, since so few students make the effort. I noticed last week this professor's hours were right after a class and just down the street, so it seemed perfect.
There's something off about him. I'm not totally sure yet what it is, but it's been bugging me all semester. I get the feeling that he doesn't like me. Certainly, I've heard other students complain about how pompous he is, which, although he does seem knowledgeable about the subject at hand, doesn't really make me like him all that much. But I feel like I haven't done anything that should earn me his dislike. I've shown up to every class, and participate, and always do the reading and turn in all the homework. What more should a professor want? I mean, sure, I don't always answer questions correctly, but the entire point of a class is to learn, and there's nothing to learn if you already have the answers.
It's possible he thinks I'm pompous. I do think I know a lot about the background of what we're studying. This class is on the Catholic Church in the early Modern world. I've taken heaps of medieval history classes, and, for what I hope are obvious reasons, I've managed to learn a lot about medieval Catholicism. The Catholic Church is not a dynamic institution; as a general rule, if it was once that way, it's probably still that way. So I know a lot about religious orders and saints and Popes and the general "how things work" kind of knowledge, which has been helpful. But I would be the first to concede that I don't know much about mission work or the Inquisitions. I might be quick to guess the reasons why things happened, but I wouldn't know.
Maybe this is the first time a professor has disliked my enthusiasm. I've yet to come across someone who doesn't like that I care about school, but I do. I care not just because it's school with a capital 'S,' but because I'm studying things I'm interested in, and things that I like learning about. And, really, I'm very lucky. Lots of people go to college and either study something they don't like or eventually hate. I get to do things that make me happy.