During my vacation, I skimmed Paul Graham’s book On Lisp. There were many interesting bits in there:
- He really tries to “sell the wonder of Lisp”. I’m not sure is possible, though.
 - “Users prefer double edged swords to blunt ones”
 - I think that he loves Scheme, but uses CL for practical reasons.
 - He digs deep into code, heavily visiting macros and even implementing continuations, non-determinism, and an object system
 - He is probably a world-class hacker who will never be recognized for his talent, but instead his success
 - This is probably not a good “first Common Lisp book” as it is very deep stuff
 
