I had the privilege of taking one of Strang's classes a few years back. He is still incredibly sharp, and has a great sense of wit.
During one lecture, he was half way through solving a problem on the board when he jumped straight to the final answer. He then turned to us, and with a deadpan delivery said:
"We haven’t proved it, but that’s okay, we only live so long."
Handwritten HTML and CSS (no JS required). I've been working on my personal site in fits and starts since 2013, so it's by far the longest thing I've ever worked on.
I'm pretty happy with it (but would love feedback & suggestions!)