翻译：以天为本的事物亲于上，以地为本的事物亲于下。

谁若游戏人生，他就一事无成；谁不能主宰自己，便永远是一个奴隶。

A school should not just be a place to learn, but a place that inspires learning.

People with a sense of fulfillment think it a good world and would like to conserve it as it is, while the frustrated favor radical change.

可持续性不是一种选择，而是我们对下一代的责任。