In a state, the liberty of one citizen is a menace to the others.
每个数学问题都有一个解决方案;有时只是需要时间去找到它。
领导者的工作不是拥有所有答案,而是提出正确的问题。
Sustainability isn't an option—it's a responsibility we owe to future generations.
石油行业的未来在于高效、清洁、低碳,我们要在传统能源和新能源之间找到平衡点。
A shortage is a sign that somebody is keeping the price artificially lower than it would be if supply and demand were allowed to operate freely.