书是一个永远不会让你失望的朋友。
"A book is a friend that never lets you down."
每个国家的历史始于一个人的心灵中。
真理的概念在任何足够强大以包含算术的形式系统中都是不可定义的。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
Every action has its pleasures and its price.
The power of words is that they can create worlds.
科学不是关于控制。它是关于在面对永远比我们最新理论更丰富、更深邃的事物时，培养一种永恒的惊奇状态。