The earth gives us coal; our duty is to give back stewardship.

If we want to protect forests, we must first understand them.

The pursuit of knowledge is a journey without end, and each discovery is a step into the unknown.

我不是商人，我就是生意本身。

I write songs to heal myself and others.

The dead are the most persistent historians.

某人的一小步就是人类的一大步。

Westward the course of empire takes its way.