实现明天的唯一限制将是我们今天的疑虑。

The best thing about getting older is that you don't lose all the other ages you've been.

递归是计算的根源，因为它需要时间来描述。

A LISP programmer knows the value of everything, but the cost of nothing.

现代个人的问题不是选择太少，而是选择太多。