In science, we try to explain what we don't understand. In mathematics, we try to understand what we can't explain.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
我们能用语言描述的现实从来不是现实本身。
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.