暴力中没有长存的希望，只能从绝望中得到暂时的解脱。

农民是最早的环保主义者，我们只需要给他们合适的工具。

数学中的每个问题都是一个等待解决的谜题，而乐趣就在于解决的过程。

You are the artist of your own life. Don't hand the paintbrush to anyone else.

世界是一个美好的地方，值得为之奋斗。

法律与道德之间没有必然的联系。

The teacher's task is not to implant facts but to place the subject to be learned in front of the learner and, through sympathy, emotion, imagination, and patience, to awaken in the learner the restless drive for answers and insights which enlarge the personal life.