The tragedy of great power politics is that it leads to conflict and war.
The hardest thing to do is to accept that you are not the hero of your own story.
譯文：活著的人姑且活一天算一天，死去的人就永遠(yuǎn)不會(huì)復(fù)生了!
"A good book is the best of friends, the same today and forever."
最好的領(lǐng)導(dǎo)者是那些傾聽多于發(fā)言的人。
The folly of humankind lies in complicating the simple.
I hope it will not be long before we have a machine that will be able to solve all mathematical problems.