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Every mathematical problem is a window into a new world of understanding.
I think that it's important to take risks in life. You have to be willing to step out of your comfort zone.
对我们森林最大的威胁不是伐木,而是漠不关心。
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.
我不认为你能做到最好。做到最好是一个努力做到最好的过程。
如果你没有前进,那你就是在落后。
In business, as in quarrying, precision and patience yield the best results.
自己所具备的美德,可以希望别人也具有,但是不能强求别人具有;自己所没有的品德,可以规劝他人具有,却不能怪罪别人没有。因此待人宽容的人根据自己的心理来体察别人的感受,决不按照自己的情况来衡量别人。