Analysis?
Should I take a course this term? I could use a few credits for the last differential, but I am not in a rush. And I am teaching only half as much in the evening, so theoretically I have the time.
But the new time was supposed to allow me to relax more, to get more of my own stuff done.
But this is a math course, and I like mathematics. It is relaxing.
But this is real analysis, the hardest math course I could take. I took it once, years ago, at a far tougher school, and got a C+. I wanted to quit math (not knowing that my C+ was above average and that analysis was genuinely hard. I thought that I just wasn’t good enough for math at that school.)
For the record, the professor is using Rudin, which I have never heard of. I have Marsden on my shelf, along with a Dover Fomin/Kolmogorov, and a copy of the same Ross that I found a picture of on the Mumbling Monkey blog.
Should a teacher take a hard course for fun?
JD2718 
It could be fun, but I bet it will be quite challenging. Rudin is hard-core. I actually have an acquaintance who learned calculus for the first time from Rudin. (He was from Bulgaria where the standard high school curriculum is different.) So the first definition of a definite integral he ever saw was, “The infimum over all finite partitions of the sum of the upper rectangles, if and only if this is equal to the supremum over all finite partitions of the sum of the lower rectangles.” Not exactly light reading, that. Where would you be taking the course?
I didn’t have time at the beginning of the term. I’d like to find a way to keep taking one course every term. Maybe I can start in the Spring.