挑战让生活有趣，而克服挑战让生活有意义。
Challenges are what make life interesting and overcoming them is what makes life meaningful.
There are no sunset industries, only sunset thinking.
仪器扩展了我们的感官，但它们不能取代我们的判断。
Quality is not an act, it is a habit.
The glow of one warm thought is to me worth more than money.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
"A book is a conversation between the author and the reader, across time and space."
