You can live to be a hundred if you give up all the things that make you want to live to be a hundred.
如果你放弃所有让你想活到一百岁的东西，你就可以活到一百岁。
“我们实现明天的唯一限制是我们今天的怀疑。”
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.
真正的自由是内心的自由。