Perverted by Physicists

I'm about to do a calculation in which I am going to subtract off an infinity. Every mathematical bone in my body is rebelling against the very idea of doing this. (It's justified physically but it still irks me.)

It is things like these that occasionally remind me that -- despite my research interests, lack of theorem-proof style, present affiliation, and so on -- in my body beats the heart of a mathematician. (I ripped it out of him, but that's a story for another time.)