我们都被年轻时的自己的幽灵所困扰。

You know, in the Middle Ages, in England, when you met a very poor person, that person would be described as an "unfortunate" -- literally, somebody who had not been blessed by fortune, an unfortunate.

The theory of probabilities is the only mathematical tool available to help map the unknown and the uncontrollable.

Investing in lower-carbon solutions is not just good for the environment, it's good business.

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.

世界因你的榜样而改变，而不是因你的观点。

永远不要低估人类精神的力量。