知识的唯一来源是经验。

寻找万物理论是现代物理学中最令人兴奋和最具挑战性的追求之一。

我不是说唱歌手，我是一个地理的传奇。

Let the world change you and you can change the world.

I think， I think when it’s all over， it just comes back in flashes. You know， it’s like a kaleidoscope of memories. But it just all comes back. But he never does.

人生中最大的错误就是不断担心自己会犯错。

The person who is slowest in making a promise is the most faithful in performance of it.