——序，姚伯麟《战后太平洋问题》，1919年9月

"The emotions are like a computer's output devices - they motivate action to solve specific adaptive problems."

I'm not a past, I'm a future.

我们不是从祖先那里继承地球；我们是从子孙那里借来的——这在林业中尤其如此。

"The most personal stories are often the most universal."

The striving to find a meaning in one's life is the primary motivational force in man.

Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work.