--Charles Mingus to Timothy Leary
Santoro, George. 2000.Myself When I am Real : The Life and Music of Charles Mingus. Oxford: Oxford University Press. Via Google Books, URL http://books.google.com/books?id=qdWqrp9z5isC&lpg=PA270&pg=PA270#v=onepage&q&f=false, accessed 7/5/2013.
Sometimes appended with "You've got to improvise on something." http://secondlanguage.blogspot.com/2008/07/between-bullshit-and-plagiarism.html.