The psychologist must be an impartial observer.

"The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter."

健康的身体是高效大脑的基础。

A leader does not deserve the name unless he is willing occasionally to stand alone.

"It's not generally realized that all writers, even the greatest, are also readers first and last."

The greatest question of our time is not communism versus individualism, not Europe versus America, not even the East versus the West; it is whether man can bear to live without God.

荒谬是我生活中最喜欢的东西，正是荒谬导致了发现。

The essence of causal inference is to go beyond the data and ask what would happen if we intervene.