One tells as few lies as possible only by telling as few lies as possible, and not by having the least possible opportunity to do so.

The stock market is filled with individuals who know the price of everything, but the value of nothing.

文学的力量在于它能够使不可见的东西变得可见。

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。