可持续性不是一种趋势，而是我们对后代的责任。
Sustainability isn't a trend—it's a responsibility we owe to future generations.
确保和平的最佳方式是维持主要国家之间的权力平衡。
任何一个时代的统治思想始终都不过是统治阶级的思想。
Sustainability isn't a trend; it's a responsibility we owe to future generations.
Leadership means making tough decisions today that will benefit the company tomorrow.
豁出去了，干吧！
经济模型的价值在于其解释和预测的能力。