The great ideological battles between liberalism and communism, or between democracy and authoritarianism, have been replaced by a general consensus on the desirability of liberal democracy.

唯一真正的发现之旅不是去陌生的地方，而是拥有其他的眼睛，通过另一个人的眼睛，一百个其他人的眼睛来观察宇宙。

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

The only limit to our realization of tomorrow is our doubts of today.

应对一个不自由的世界，唯一的方法就是变得如此绝对自由，以至于你的存在本身就是一种反抗。