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.
写作不仅仅是讲故事，更是揭示隐藏的真相。
物理学中的发现之旅不仅仅是寻找答案，更是提出正确的问题。