In the perl README, in which Larry Wall delineates that perl may be distributed under either the terms of the GPL or Artistic License he also makes the following statement re: the Author and Authorship:
Just a personal note: I want you to know that I create nice things like this because it pleases the Author of my story. If this bothers you, then your notion of Authorship needs some revision. But you can use perl anyway. :-)

                      The author.