Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.

I'm the kind of person that has to learn the hard way.

The greatest mistake you can make in life is to be continually fearing you will make one.

家是你理解沉默的地方。

我不是天才，我只是比别人努力多一点。

趋势是你的朋友，直到它结束。