The problem with quantitative easing is that it works in practice but it doesn't work in theory.

创新是能源行业的命脉；没有它，我们就会停滞不前。

书籍是通往宇宙的钥匙。

Failure is simply the universe's way of teaching you what not to do next time.

True leadership is measured by the growth of those you lead.

【译文】孔子说：“经常学习，不也喜悦吗？远方来了朋友，不也快乐吗？得不到理解而不怨恨，不也是君子吗？”

模型的目的是足够简单以便理解和使用，但又足够复杂以捕捉系统的基本特征。