学得越多，越明白自己知之甚少。
The more we learn, the more we realize how little we know.
"In the end, we will remember not the words of our enemies, but the silence of our friends."
People won't have time for you if you are always angry or complaining.
可持续发展不仅仅是一个流行词，它是负责任的林业的基础。
The only thing that is truly important is the impact you have on others.