Mathematics is the language in which the gods talk to people.

I write songs to heal myself and others.

A good world needs knowledge， kindliness， and courage； it does not need a regretful hankering after the past or a fettering of the free intelligence by the words uttered long ago by ignorant men.

This is how the entire course of a life can be changed: by doing nothing.

我们才刚刚开始。