Thanks, I'll add the John Stillwell book to my reading list. And thanks for the idea of watching the newer "Cosmos" series. I'm always looking for ideas for shows to watch with my son!
I went back to college and started a bachelor in philosophy in a specific cursus tailored for people with a full time job. Met plenty of fantastic people with various backgrounds.
Business & work : Deep Work - Cal Newport, Anti fragile - Nassim Taleb
CNV : Nonviolent Communication: A Language of Life. Marshall Rosenberg
"spiritual" or wisdom related : Tao Te King, Marcus Aurelius, the Gospel, Meditation on the Tarot
classics : Plato, Homer, and Peloponese's war by Thucydides.
And I couldn't explain why but I re-read Into thin air by Krakauer every year.