真正的问题不在于机器是否会思考，而在于人类是否会思考。

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

"In computer science, we are always trying to find the balance between expressiveness and tractability."

书籍不仅仅是物品；它们是经历，它们改变我们。