"To be Irish is to know that in the end the world will break your heart."
Change is uncomfortable, but it's necessary for progress.
大凡在各种事业上取得成功的人,一定是非常敬业,把事情认真对待的;那些失败的,一定是因为轻慢了。
The most important thing in communication is hearing what isn't said.
安全困境是国际政治的一个基本特征,因为国家增加自身安全的努力往往会降低其他国家的安全。