安全不是功能，而是基础。

成绩差距主要是知识差距。

The only way to learn mathematics is to do mathematics.

When you are young, you think you will be happy when you are older. But then you get older and you realize you were happy when you were young.

我唯一在乎的是艺术。如果我不能创造，我真的看不到做其他事情的意义。