领导的艺术在于说不，而非说是。说是很容易的。
我不计算练习的时间，而是让时间有价值。
The bigger the company, the smaller we should think.
Technology must be people-oriented, otherwise it is meaningless.
I do not believe in God… to the extent that theists have made their concept intelligible， they have given us no reason to think anything answers to it.
