世界是一本书，不旅行的人只读了一页。
The world is a book, and those who do not travel read only one page.
Sometimes the hardest cases are the ones closest to home.
最终重要的不是答案，而是我们提出的问题，我们走过的旅程，对真理的追寻。
可持续性不是一种趋势，而是我们对后代的责任。
We change our behavior when the pain of staying the same becomes greater than the pain of changing. Consequences give us the pain that motivates us to change.
一本好书是能改变你的书，哪怕只是一点点。
智者自知其无知。
今天我们种下的每一棵树都是留给后代的遗产。
The most important thing is to be honest with yourself and your audience.