没有压力，就没有钻石。

元素可以分为具有相似性质的组。

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.

成功投资的关键是拥有纪律性的心态。