函数是一种对应规则，通过它当给定任何东西（作为参数）时，可以获得另一个东西（该参数的函数值）。

最好的发现总是发生在那些没有寻找它们的人身上。

I think of my pile of old paperbacks, their pages gone wobbly, like they’d once belonged to the sea.

It is necessary from the very nature of things that power should be a check to power.

你喜欢的东西，并不意味着世界一定会给你。

The goal of mathematics is to understand the patterns of the universe.

Beauty is in the eye of the beholder, but it's the artist's job to challenge that.

数学之美在于它能够如此精确地描述宇宙。