Science Sunday!
Today, let there be light.
“Einstein on Light; Light on Einstein”, a lecture by Douglas Hofstadter at Uppsala University in 2017. This is about 52 minutes, with a short introduction.
Bonus #1: A bit shorter: Douglas Hofstadter at Stanford on “Trying to Muse Rationally About the Singularity Scenario”.
Bonus #2, which is also kind of a bookmark: Someone at MIT taught a course on Gödel, Escher, Bach, and the lectures are posted on the ‘Tube. Here’s the first one, which should enable you to find the rest of them.