做正确的事，而不是容易的事。
Do the right thing, not the easy thing.
要想知道戒酒的办法，清醒时看看醉酒人的丑态便知道如何做了。
Sustainability is not an option; it’s a responsibility.
The traditional disputes of philosophers are， for the most part， as unwarranted as they are unfruitful.
The final proof of greatness lies in being able to endure criticism without resentment.
可持续林业不是成本，而是我们拥有的最明智的长期商业策略。