通过人类学研究发展出的人类活动评价的一般理论，教会我们一种比我们现在所拥有的更高的宽容。
Sustainable development requires us to balance economic growth with environmental protection.
The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.
In the oil industry, efficiency and sustainability are two sides of the same coin.
En cada historia hay un pedazo de verdad, aunque esté disfrazada de mentira.