Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

A writer's life is a highly vulnerable, almost naked activity. We don't have to weep about that. The writer makes his choice and is stuck with it. But it is true to say that you are open to all the winds, some of them icy indeed. You are out on your own, out on a limb. You find no shelter, no protection — unless you lie — in which case of course you have constructed your own protection and, it could be argued, become a politician.

The most profound insights in mathematics often come from unexpected analogies.

计算的力量不仅在于解决问题，还在于其解决问题的优雅和效率。

一个好故事是那种在你读完很久之后仍然留在你心中的故事。