A man's errors are his portals of discovery.
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.
成功就是带着热情从一个失败走向另一个失败。
可持续性不是一种选择;它是我们行业未来的必要条件。
世界是一个非常令人困惑的地方,能够思考它是一种巨大的特权。