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.

存在即是理性。

我学得越多，就越意识到自己不懂的还有很多。

People always say that you can't please everybody. I think that's a cop-out. I think if you work hard enough, you can please anybody.

可持续发展不是成本，而是我们一生中最大的创新机会。