过去总是在作品中显现。

成功不是终点，失败也并非致命，重要的是继续前进的勇气。

"To be useful was the best thing the old men ever hoped for themselves, and to be aimless was their worst fear."

"He who has a why to live can bear almost any how."

生活是一系列的时刻，我们有责任充分利用每一个时刻。

我们都是潜在的化石，仍然携带着我们过去的痕迹。

A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.