我认为生活中最重要的是自信。
I think the most important thing in life is self-confidence.
真相很少纯粹，也绝不简单。
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。
I'm more powerful than my mind can even digest.
The main difference between me and other people who have amassed this kind of money is that I am primarily interested in ideas, and not in making money.
我写作既是为了理解，也是为了被理解。