"The more that you read, the more things you will know. The more that you learn, the more places you'll go."

人活着，就应该坦坦荡荡，明明白白，无所愧疚。

地理学是关于地方的科学，而不是关于人的科学。

Every decision we make should reflect our commitment to a healthier planet.

Without sacrifice, there is no freedom.

The best way to predict the future is to invent it.