我看到了，我忘记了；我听到了，我记住了；我做过了，我理解了。
Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.
The energy landscape is changing, and we must change with it to remain relevant.
做人就是与自己发生冲突。
The past is a shadow that clings to our heels.
We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.
To get what you want, you have to deserve what you want.That world is not yet a crazy enough place to reward a whole bunch of people.