看、听和记忆都是建构的行为。

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.

If you do not tell the truth about yourself you cannot tell it about other people.

身体一旦垮掉是最遗憾的事情！这健康的体魄，太值得我们呵护了！并且保持健康，才能有足够的精力去实现我们的梦想！