可持续性不是一种选择；它是我们对后代的责任。

所有好的写作都是在水下游泳并屏住呼吸。

How far you go in life depends on your being tender with the young, compassionate with the aged, sympathetic with the striving and tolerant of the weak and strong. Because someday in your life you will have been all of these.

你不可能不了解历史。