"Any man who would change the World in a significant way must have showmanship, a genial willingness to shed other people's blood, and a plausible new religion to introduce during the brief period of repentance and horror that usually follows bloodshed. "Every failure of Earthling leadership has been traceable to a lack on the part of the leader," says Rumfoord, "of at least one of these three things."
January 1, 1970
https://en.wikiquote.org/wiki/Kurt_Vonnegut