I am a big fan of existentialist philosophy, in its ongoing discussion about what it is to be human and what this life is all about.  I also used to listen to Lex Friedman's podcast, but as he lurched ever further towards the right I stopped. In this interview, Lex's often innocent, even simple-sounding questions work really well against Sean Kelly's vast knowledge of the topic.  I have listened to this podcast multiple times, I hope you enjoy it as much as I do.