生命因为失去爱情而更丰盛。

I don't believe in perfection. I think that's a very dangerous idea. It's a very unattainable idea.

The deterioration of a government begins almost always by the decay of its principles.

坚持是梦想与现实之间的桥梁。

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

Modern forestry must balance three axes: ecology, economy and ethics.

一个好的数学家是能看到定理之间类比的人；一个伟大的数学家是能看到类比之间的类比的人。