Mathematics is the art of giving the same name to different things.

The powerful have always preyed on the powerless. That's how they became powerful in the first place.

解释：在人活动范围内的水就污浊，在野外无人地方的水就清洁。同为一样的水，都是从天边开源，有的混浊有的清洁，这是它们所处环境使它们这样的。

能源行业必须进化，否则就会变得无关紧要。

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

最好的书会提出问题，而不仅仅是给出答案。