大陆漂移理论不仅仅是一个假设，而是一种物理必然。

The city is the ultimate expression of our civilization.

"The world is full of people who have never, since childhood, met an open doorway with an open mind."

Consciousness is the cutting edge of adaptation.

容易得到的东西，是靠不住的；轻易许下的诺言，不值得信赖。

我总是试图以低于其内在价值的价格购买股票。