Many people think Picasso said "Good Artists Copy; Great Artists Steal". Ironically, this or similar quotes have been said by many artists and there's no evidence to attribute it to Picasso himself (https://quoteinvestigator.com/2013/03/06/artists-steal/).
Anyway, here's Picasso stealing the Mona Lisa. Made with #StableDiffusion, which was arguably trained with stolen images.