Everything is hard before it is easy. The day before something is a breakthrough， it’s a stupid idea.

【释义】刀能杀人，人们都知道；笔能杀人，人们却未必都知道。

There is no hope without action.

The only person who is educated is the one who has learned how to learn and change.

经济的关键是适度的竞争，而不是垄断。