"You can't go back and change the beginning, but you can start where you are and change the ending."
你无法回到过去改变开头，但你可以从现在开始改变结局。
广义相对论在某种意义上就是引力场的理论。
Success comes from understanding your customers better than they understand themselves.
天子认为对的未必对，天子认为错的未必错。