We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.

The value of a thought is in its consequences for behavior.

有些伤口永远不会愈合，只会转化。

改变始于一小步，但需要集体的努力才能使其持久。

记忆不是关于过去，而是关于现在。