The best way to lead is by example.
"I am not interested in the surface of things, but in what lies beneath."
释义：随随便便交一些不好的朋友，还不如整天读书更好。
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.