出自先秦《荀子·修身》。批评我而又批评得恰当的，他便是我的老师；肯定我而又实事求是的，他便是我的朋友；讨好奉承我的，他便是我的仇人。说明修身养性要有闻过则喜的雅量，要亲近正人君子而远离谄谀小人。这样，才会有利于自己道德的修炼进步。
The true cost of coal must account for both its immediate value and its long-term impact on communities and ecosystems.
我做过的最有争议的事情就是坚持下来。
如果你竞争对手为中心，你就不得不等待你的竞争对手有所作为。如果你以客户为中心，你就会更具有开拓性。
True leadership is about empowering others to succeed.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."