每个人都有不为世人所知的秘密悲伤；我们常常称一个人冷漠，其实他只是悲伤。

We change our behavior when the pain of staying the same becomes greater than the pain of changing.

I'm pretty sure none of this would have happened if I hadn't been fired from Apple. It was awful tasting medicine, but I guess the patient needed it. Sometimes life hits you in the head with a brick. Don't lose faith. I'm convinced that the only thing that kept me going was that I loved what I did. You've got to find what you love. And that is as true for your work as it is for your lovers.

Efficiency without sustainability is just short-term profit disguised as progress.