I don’t know what the market is going to do. I just try to buy things that are cheap.

History is not just about kings and battles—it's about the people who lived through it.

Innovation in natural gas extraction is key to meeting the world's growing energy demands while reducing environmental impact.

I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

"The best leaders are those who can listen as well as they can speak."

The night is a mirror, and it shows you what you’re afraid of.

译文：鸟的羽毛尚未丰满，就不能展翅高飞。

The most important thing is to be true to yourself.