The only way to do great work is to love what you do.

不受流俗所牵累,不因外物而矫饰,不对人提出苛严的的要求,不背违众人的心情,但愿天下太平无事人人都能糊口养生,自己和他人生存条件能够得到保证也就心满意足,并且以此来剖白自己的心迹。

We must balance economic growth with environmental responsibility.

I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.

Leadership in forestry means making tough decisions today for a better tomorrow.