你可以锁上你的图书馆；但没有门、没有锁、没有门闩能禁锢我思想的自由。
Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.
When given the choice between being right orbeing kind, choose kind.
The soil is not just dirt—it's the foundation of civilization.
Risk more than others think is safe. Dream more than others think is practical.
可持续林业不是成本，而是对我们未来的投资。
广东话谚语