If you want to see what this nation is all about, you have to ride the rails. Look outside as you speed through, and you’ll find the true face of America.

The materials I use are witnesses of time.

科学应该服务于人类，而不仅仅是好奇心。

写作就像用文字绘画，每一个字都是不同的颜色。

Even in the grave， all is not lost.