在数学中，发现的旅程往往比目的地本身更有价值。

A problem well put is half solved.

世界是残酷的，但它也是美丽的。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

历史学家是回望过去的先知。

I feel most deeply that this whole question of Creation is too profound for human intellect.  

Nature is the greatest teacher.

生命太短暂，不能活在别人的梦想中。

历史不是过去。它是我们进化出来的组织我们对过去无知的方法。