我应该猜得出来那藏在她可怜的小计谋后面的所有柔情。花儿就是这样反复无常的呀！我太年轻了，我真不知道怎样才能爱她。

The world is a place of the living, and the dead have no place in it. The dead are nothing.

The most profound ideas in mathematics often arise from the simplest observations.

Challenges are opportunities in disguise.

一个有趣的事实是，岩石越古老，与今天的岩石差异越大。