I don't let the world change my spirit.
征服并不足以，还必须学会诱惑。
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
Mathematics is the art of giving the same name to different things.
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
最伟大的诗歌是那些能够触动人心的诗歌。