我不怕别人说我不好，我怕的是自己不够好。
【译文】与人说话只能说三分，不能把内心的想法全部吐露给别人。有意栽花花不一定开放，无意去插柳柳树却可能长得茂盛。龙和虎的形态好画，却难以画出它们的骨骼。了解人的表面很容易，但了解人的内心却十分困难。
Doubt is not a pleasant condition， but certainty is an absurd one.
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.
略知一点哲学可能使人倾向于无神论，但深刻的哲学可能使人回归到宗教。