"She's the most stubborn woman in the world. As a woman, she's the highest in stubbornness. But she's very smart and incredibly cerebral. And I think that's why she's been able to change her style and image so much. Her music pays attention to what people are thinking." 

"Hard Candy" co-writer, producer and performer Justin Timberlake, talking to Metro's Lauren Williams about his latest film, The Social Network.