Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.

艺术不是关于美，而是关于真理。

释义：要了解过去和现在，以便灵活应变，适应变化。

Careers are a jungle gym, not a ladder.

The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory. They are forgotten. And the living, too, will be forgotten.