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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.
I think that the most important thing in art is to provoke thought, not to provide entertainment.
真相很少是纯粹的,也从来不是简单的。
The most damaging phrase in the language is: 'We've always done it this way.'