可持续性不再是一个选项；它是一个商业必须。

不要害怕失败，要害怕不去尝试。

I would not dare to say that there is a direct relation between mathematics and madness, but there is no doubt that great mathematicians suffer from maniacal characteristics.

领导力是关于做出今天艰难的决定，而这些决定将造福后代。