书籍是最安静、最恒久的朋友;它们是最易接近、最睿智的顾问,也是最耐心的老师。
弦理论是二十一世纪物理学的一部分,偶然落入了二十世纪。
The best scientists are those who remain humble in the face of the unknown.
The past is a cupboard full of light and all you have to do is find the key that opens the door.