每一个数学问题都是通向新理解世界的窗口。

最重要的思想是那些让我们以新的、更高效的方式利用现有资源的想法。

The great challenge of our time is to create a world order that is both just and sustainable.

当我们无力改变处境时，我们就被挑战去改变自己。

The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.

城市不仅仅是一个地方，它是一个有自己记忆的生命体。