True progress is measured not just in profits, but in the positive impact we have on people and the planet.

I have never been able to write a happy play. I can't. I can write a funny play, but I can't write a happy play.

Never let your sense of morals prevent you from doing what is right.

荒野是一个美丽而危险的地方。要生存，你必须尊重两者。

The best time to plant a tree was twenty years ago. The second best time is now.