Lev Grossman said this quote

“ Up until relatively recently, creating original characters from scratch wasn't a major part of an author's job description. When Virgil wrote The Aeneid, he didn't invent Aeneas; Aeneas was a minor character in Homer's Odyssey whose unauthorized further adventures Virgil decided to chronicle. Shakespeare didn't invent Hamlet and King Lear; he plucked them from historical and literary sources. Writers weren't the originators of the stories they told; they were just the temporary curators of them. Real creation was something the gods did.All that has changed. Today the way we think of creativity is dominated by Romantic notions of individual genius and originality, and late-capitalist concepts of intellectual property, under which artists are businesspeople whose creations are the commodities they have for sale. ”