The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome.
可持续性不是一种选择;它是我们星球未来的必需品。
"I like to explore the boundaries between the visible and the invisible."
地质学的进步因用想象的原因代替真实的原因而大大受阻。
今天所做之事勿候明天,自己所做之事勿候他人。
生活是一种人人须学而无人能教的艺术。