Hope for the ocean begins with the courage to change.
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。
One of the advantages of being old is that you can speak your mind without worrying about the consequences.