Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.

我不是商人，我就是生意本身。

如果你能看透每一个人的心，就会知道，没有人是普通的。每个人都值得大家站起来为他鼓掌一次。