解释：局势安定的国家，常常是富足的；局势 动乱的国家，常常是贫穷的。

I believe that the most powerful films are those that challenge the audience's perceptions.

质量从来不是偶然的；它始终是智慧努力的结果。

We are moving from an economy based on the production of goods to one based on the production of knowledge.

如果行善不是发自内心，那就不会长久。比如被捐款、被做义工等等，都是一锤子买卖，因为不是他自愿的。