石油的真正成本不仅仅是每桶的价格，还包括环境和社会影响。

"History is not the past—it is the method we have evolved of organizing our ignorance of the past."

Every species we cultivate teaches us something new about marine ecosystems.

Short-term gains should never come at the expense of long-term sustainability.

数学的历史是人类好奇心和创造力的历史。

To be unhomed is not to be homeless, but to have your home always in question.