可持续性不是一种选择，而是一种责任。

化学是在微观和宏观之间搭建桥梁的艺术。

Understanding the real lives of the poor is the first step toward designing effective policies to help them.

The secret of change is to focus all of your energy not on fighting the old, but on building the new.

Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.

释义：在探究事物的道理和实践中，要像在独处时一样谨慎自律，时刻保持警惕、戒备，防止自己的所思所为有不符合天道良知的事情，通过对私欲的严防死守和克除，实现致良知和修身的目的。