I never look back. I look forward to the next challenge.

外交家应该具备尊重和理解其他国家和文化的能力，以及跨越语言和文化障碍进行沟通的能力。

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government," and as such constituted the "end of history."

The most important thing is to be true to yourself.

The past is not a single story but a chorus of voices.