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.
The man who does not work for the love of work but only for money is not likely to make money nor to find much fun in life.
创新是任何成功企业的命脉。没有创新,公司就会停滞不前并消亡。