最终，我们都是孤独的，这是最可怕的真相。

The challenge in theoretical computer science is not just to solve problems, but to understand the nature of problem-solving itself.

Mathematics is an art, and as an artist, you have to be honest with yourself.

The most important property of a program is whether it accomplishes the intention of its user.

Civilization as it is known today could not have evolved, nor can it survive, without an adequate food supply.

世界是一本书，不旅行的人只读了一页。

没有欢乐的生活就像没有驿站的漫长旅程。

"The most important thing is to stay agile."

儿童有着他自己的人格，他自身具有创造精神的美和尊严。这种美和尊严是永远不能磨灭的，所以他的纯洁而非常敏感的心灵需要我们最审慎的爱护。