可持续性不是一种选择，而是一种责任。

The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.

The most important resource in any economy is its people.

国与国之间是平等的，人与人之间也是平等的，在人格与尊严上是没有贵贱之分的，上天对所有人都是一视同仁的，人生而平等是上天赋予每个人的不可被侵犯的权利。

知识的唯一来源是经验。

The greatest misfortune is not knowing what's enough.

The only thing that you absolutely have to know is the location of the library.

行为主义的理想是消除强制：通过改变环境来实施控制，从而强化对每个人都有益的行为。