Nationalism is an infantile thing. It is the measles of mankind.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
The significant problems we face cannot be solved at the same level of thinking we were at when we created them.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Men marry women with the hope they will never change. Women marry men with the hope they will change. Invariably they are both disappointed.