淺陋的人，不能和他談論深奧的見解；愚蠢的人，不能和他謀劃有智慧的事。井底之蛙，不能和它談論東海的快樂。
如果你借了什么東西，試著在歸還的時候把它變得比你借到時的狀態(tài)更好。清潔它、打磨它、填充它。
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.
Growth comes from taking risks, but calculated ones that align with your vision.
When you are young, you think that the world is a place where you can live as you choose. But as you get older, you realize that the world is a place where you have to live as you must.