技术是只有在它让人们能做他们想做的事时，才会被接受。
Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is most important.
过去并未丢失，它被编码在我们体内。
生命的最大用处是将它用于比生命更长久的事物上。
The books that the world calls immoral are books that show the world its own shame.