It is the absence of facts that frightens people: the gap you open, into which they pour their fears, fantasies, desires.

Excellence is not an act, but a habit.

我不去想过去，唯一重要的是未来。

We must listen to the land—it tells us what it needs.

"It's important to write about difficult subjects in a way that children can understand."

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

我们必须将地球视为一个单一的有机体，并尊重它。

The only way to achieve the impossible is to believe it is possible.