The land we quarry is not ours to own, but ours to steward.
【释义】治理国家的关键在于秉持公平正直的原则。
关于人性,唯一真正知道的是它是会变化的。
Every tree we plant today is an investment in tomorrow's clean air and healthy ecosystems.
当每个人都试图同时出售时,流动性就消失了。