语言是理解高级心理过程的关键。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

心是脆弱的，但它也是我们最强大的部分。

In the end, we will remember not the words of our enemies, but the silence of our friends.

新的大国的崛起总是引起现有大国的担忧，因为它威胁到现有的权力平衡。