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.

领导力在于让你的存在使他人变得更好，并确保这种影响在你离开后依然持续。

True discovery often happens at the intersection of curiosity and persistence.