每个人都有两次生命，第二次开始于他意识到自己只有一次生命的时候。

The spread of liberal democracy and the integration of the world economy have created a situation in which the major powers are no longer willing to go to war with one another.

"If you don't stand for something, you'll fall for anything."

Curiosity is the engine that drives scientific progress.

在我们社会中，勇气的反面不是怯懦，而是从众。

The truth doesn't always set you free. Sometimes it just makes you see the chains.