Good artists copy; great artists steal ?

"Good artists copy; great artists steal" ~ mistakenly attributed to Picasso by Steve Jobs in 1988

"A good composer does not imitate; he steals" - Igor Stravinsky 1967

“Immature artists imitate. Mature artists steal” — Lionel Trilling 1962

Immature artists borrow; mature artists steal - Anon 1959

Immature poets imitate; mature poets steal - T. S. Eliot 1920

Great poets imitate and improve, whereas small ones steal and spoil ~ W. H. Davenport Adams 1892

 http://quoteinvestigator.com/2013/03/06/artists-steal/