我们必须接受失望，因为它是有限的，但千万不可失去希望，因为它是无限的。
We must accept finite disappointment, but we must never lose infinite hope.
The most important political development of the last half century has been the spread of liberal democracy around the world.
The key to solving complex problems is to break them down into manageable pieces.
整个人生就像看电影。只是你总是在影片开始十分钟后才进场，而且没人告诉你剧情，所以你必须自己从线索中拼凑出来。