As my students can attest, I have a tendency to get rather enthusiastic in the classroom. The reason for that is twofold: (1) I find the topics I teach rather interesting and important and (2) I think that if I expect anyone else to get excited about the material, then I have to demonstrate that excitement myself. 

And there’s one part of one class lecture in particular when I get especially fired up. 

It’s in my concluding comments regarding the topic of