科学的进步是逐渐认识到我们面临的问题并不像它们看起来那么简单。

林业的创新意味着在生态健康与经济可行性之间取得平衡。

国际政治是一个残酷而无情的舞台，各国不断努力最大化自己的权力和安全。

We are to remember that we are not to take anything with us out of this world, and that it is how we have conducted ourselves here that will matter in the end.

要理解他人，必须先理解自己。