"Every story is a journey, and every journey is a story."

You have to believe in yourself, even when no one else does.

The essence of mathematics lies in its freedom.

I will tell you what I will do and what I will not do. I will not serve that in which I no longer believe whether it call itself my home, my fatherland, or my church: and I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defence the only arms I allow myself to use—silence, exile, and cunning.

保持简单，简单的事情重复做。