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知道自己不知道什么比聰明更有用。

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.

Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple.

我不是解放者。解放者不存在。人民自己解放自己。

不管贏得這世界不是失去它。反正它是個無聊的世界。