The deterioration of every government begins with the decay of the principles on which it was founded.

教师必须为形成较好人类而献出一切。

You’ve got to have models in your head. And you’ve got to array your experience—both vicarious and direct—on this latticework of models. You may have noticed students who just try to remember and pound back what is remembered. Well, they fail in school and in life. You’ve got to hang experience on a latticework of models in your mind.