地理学首先是关于地方的科学，而非关于人的科学。

"The most difficult thing is to make something simple."

成功不是终点，失败也不是致命的：重要的是继续前进的勇气。

There is no doubt that in exchanging a self-centered for a selfless life we gain enormously in self-esteem. The vanity of the selfless, even those who practice utmost humility, is boundless.

永远不要低估“无用”的基础研究的重要性。