The writer must believe that what he is doing is the most important thing in the world. And he must hold to this illusion even when he knows it is not true.

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

我们发现的每一颗新行星都让我们更接近回答这个古老的问题：我们在宇宙中是孤独的吗？

You are only as young as the last time you changed your mind.

事物的那一面存在着一种是与非，这一面同样也存在着另一种是与非。