The facts are always less than what really happened.

我们所看到的改变了我们所知道的。我们所知道的改变了我们所看到的。

我一直在不停地努力，不嘲笑、不哀叹、不嘲笑人类的行为，而是理解它们。

I was in the middle before I knew that I had begun.

I don't think that everyone should become a mathematician, but I do believe that many students don't give mathematics a real chance.

最虚度的日子，是那些没有欢笑的日子。