PewDiePie mentioned The Chrysanthemum and the Sword by Ruth Benedict 3 times

I read the sword and chrysanthemum, I don't know if that's how you say it. It was written by Ruth Benedict, an anthropologist that was hired by the American government during World War II as an attempt to understand the Japanese people and their mindset at the time [...] Some people say it's not accurate, some people say it is. I just found it really interesting.

— PewDiePie

I'm almost done with the Sword and Chrysanthemum. It's really interesting.

— PewDiePie

An old Samurai saying "The flower and the Sword" ('The Chrysanthemum and the Sword')

— PewDiePie