Lisp值得学习，因为当你最终掌握它时，你将获得深刻的启蒙体验；这种体验将使你在余下的日子里成为一个更好的程序员，即使你从未真正大量使用Lisp本身。
The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.
The best way to predict the future is to invent it.
The ultimate test of any economic theory is whether it improves real-world decisions.
