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

The essence of computational complexity is to understand the limits of what can be computed efficiently.

Love is the strongest force in the world.

History is made of moments, both big and small.

人类能够达到的最高活动是为了理解而学习，因为理解就是自由。

I have traveled so far to see the wonders of the world, but it is the people I have met along the way that have truly amazed me.

传记的挑战不在于发现事实 - 而在于发现事实背后的意义。