语言是我们拥有的最强大的武器，因为我们可以用它改变世界。

真正的教师是能够立即站在孩子立场上的人。

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.

儿童不会自己判断自己，他是以别人对他的态度来判断自己的。