It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.  

Good product managers should think like users and act like CEOs.

In such condition there is no place for industry...and which is worst of all， continual fear and danger of violent death.

小猪：“‘爱’这个字是怎么写的?”维尼：“爱不是写出来的，是感觉到的。”