能源的未来是多元化的。没有任何单一能源可以满足世界的所有需求。我们需要所有能源协同工作。
Sustainability isn't a department; it's a design principle that must permeate everything we create.
自然实验可以为经济问题提供有价值的见解。
To be a philosopher is not merely to have subtle thoughts, nor even to found a school, but so to love wisdom as to live according to its dictates.