Have a heart that never hardens, and a temper that never tires, and a touch that never hurts.

The true value of a forest can never be measured in board feet alone.

我不追随潮流，我创造潮流。

We don't have anything to lose, which is a very liberating feeling.

在人类（以及动物）的漫长历史中，学会最有效合作与应变的人最终胜出。