教师必须相信每个孩子的可教育性。

自然是用数学语言写的。

信件是传记作者的金矿；它们揭示了官方记录所隐藏的东西。

Customer needs are always our primary driving force.

The wild demands respect. If you give it, it will give back.

I disapprove of what you say， but I will defend to the death your right to say it.