自我不是坚固的事物，而是回声的集合。

没有所谓的幸福结局。

森林的真正价值不仅仅以木材的板英尺来衡量，还在于它所维持的生命和生态系统。

The beauty of formal methods lies in their ability to provide absolute certainty about the correctness of a system.

A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.

夺去爱情，我们的世界就是一个坟墓。