"To live is the rarest thing in the world. Most people exist, that is all."
这句话其实是莎士比亚借哈姆雷特之口说的，但是霍金非常喜欢，曾在自己著作中多次引用，所以很多人误以为本句话是霍金说的。
There is no such thing as a quality problem. There are only problems of people not doing what they are supposed to do.
The power of literature lies in its ability to make us feel less alone in the world.
The greatest thing you'll ever learn is just to love and be loved in return.