I never buy a stock unless I understand the business.

The study of computational complexity is not just about solving problems, but also about understanding the limits of what can be computed.

I believe that science has great potential to improve human life.

Women, they have minds, and they have souls, as well as just hearts. And they've got ambition, and they've got talent, as well as just beauty. I'm so sick of people saying that love is just all a woman is fit for.

购买旧书，它们的词与新词相同，也可以去图书馆。

The important thing is not to stop questioning. Curiosity has its own reason for existing.

The most important political development of the last half century has been the spread of liberal democracy around the world.

Great companies are built on great cultures.

Don't be afraid of being different, be afraid of being the same as everyone else.