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I consider this totally cheating:

  $ python quine.py
  import sys
  print open(sys.argv[0]).read(),
I couldn't do python for a long time because it made me feel guilty all the time.

Sometimes writing python literally feels like taking candy from a baby

(comment deleted)
This misses the point of a Quine. You haven't written the code to generate the string, you've used an external library that someone else wrote to do that job for you.

I made this mistake the first time I tried too.

Oh I know, hence I called it "cheating"
In Lisp they're pretty easy:

((lambda (x) (list x (list 'quote x))) '(lambda (x) (list x (list 'quote x))))

returns itself (note: written in Clisp; I've had issues with Lispworks doing things properly). You can also stuff messages in there pretty easily:

((lambda (x y) (list x (list 'quote x) y)) '(lambda (x y) (list x (list 'quote x) y)) "Hello, world")

Python (triple quotes make this too easy):

  def q(s):
      print(s+'q(""' '"'+s+'"' '"")')
  q("""def q(s):
      print(s+'q(""' '"'+s+'"' '"")')
  """)