如果我们想保护森林,就必须先了解它们。
历史不仅仅是关于过去;它是关于过去如何塑造现在。
The art of life is to live in the present moment, and to make that moment as perfect as we can.
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.