I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

人生最好的老师就是经历。

免疫系统就像一把双刃剑；它可以对抗癌症，但也需要被控制。

Will you be clever at the expense of others， or will you be kind？

场所的精神孕育了建筑。