The key is to keep improving, to keep working hard.

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.

市场是一个复杂的系统，我们试图用模型来简化它。

It seemed the world was divided into good and bad people. The good ones slept better ... while the bad ones seemed to enjoy the waking hours much more.

水从山上流到滩头不是有意的，白云从洞中穿过也是无心的。