石油的真正价值在于它改变经济和社会的能力。
The task must be made difficult, for only the difficult inspires the noble-hearted.
最大的风险就是不冒任何风险。在一个快速变化的世界里,唯一注定失败的策略就是不冒险。
The hardest thing is to live richly in the present without letting it be tainted by the past or future.