All things are possible until they are proved impossible and even the impossible may only be so, as of now.

I like to think of mathematics as a kind of poetry.

可持续性不是一种选择；它是我们对后代的责任。

最可持续的竞争优势是比竞争对手学得更快。

不去尝试办不到的事情, 不去追求得不到的东西, 不居于不能持久的地位, 不推行不可重复的政策。