To understand the present, we must first confront the past.

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.

"Theatre is the art of the unspoken."

学习是系统中产生的任何变化，这种变化或多或少会永久性地改变其适应环境的能力。

The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.

A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us.