They are not monuments, but footprints. A monument only says, 'At least I got this far,' while a footprint says, 'This is where I was when I moved again.'
All truly great thoughts are conceived while walking.
我在大学的时候，一直想参与做能够改变世界的事情。而现在我就在做这样的事情。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
徒步旅行的真正魅力不在于看到物体，而在于它们激发的情感。
不要担心别人会做什么。预测未来的最好方法就是创造未来。