Time is a slippery thing: lose hold of it once, and its string might sail out of your hands forever.
The best investment we can make is in the health of future generations.
学习Lisp是值得的,因为当你最终理解它时,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,即使你实际上并不经常使用Lisp本身。
最有力的艺术往往是最谦逊的。