最好的故事是那些在我们读完很久之后仍萦绕在心头的故事。

采矿技术不是为了取代人，而是为了让他们能够做得更好。

Behavior is determined by the current stimulus situation and past reinforcement history.

Time is dead as long as it is being clicked off by little wheels; only when the clock stops does time come to life.