It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.

I dream that my son will grow up to be a good person, a free person. I dream that someday you will return to revisit the land of our childhood. I dream that flowers will bloom in the streets again...and kites will fly in the skies!

The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.

The only real wisdom is the wisdom of the heart.

世界是一个伟大的轮子，我们是其中的辐条。

"The act of writing is an act of resistance against forgetting and oblivion."

We must balance economic growth with environmental stewardship.

The only limit is the one you set for yourself.