Education is the foundation of sustainable forestry—people protect what they understand.

The deep, personal material of the latter half of your life is your children. You can write about your parents when they're gone, but your children are still going to be here, and you're going to want them to come and visit you in the nursing home.

We have to be part of the solution when it comes to climate change.

Who can afford to do professional work for nothing?

我不觉得有必要确切地知道我是谁。生活和工作的主要兴趣在于成为你最初不是的另一个人。

It is to the credit of human nature, that, except where its selfishness is brought into play, it loves more readily than it hates.

我们不是从祖先那里继承土地；我们是从子孙那里借来的。