That's exhilarating if you're doing well, and very crushing if you're not. It leads, in the worst cases -- in the analysis of a sociologist like Emil Durkheim -- it leads to increased rates of suicide. There are more suicides in developed, individualistic countries than in any other part of the world. And some of the reason for that is that people take what happens to them extremely personally -- they own their success, but they also own their failure.

Coal will remain part of the energy mix, but it must be cleaner and more responsible.

In the landscape of string theory, there are perhaps 10^500 different vacuum states, each corresponding to a different possible universe.

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

我们不会试图比市场更聪明；我们试图理解它。

荒野是一个极端的地方。要生存，你必须接受高潮和低谷。

On the way to a grand goal， celebrate the smallest victories as if each one were the final goal. No matter where it ends you are victorious.