I just like the idea of pills. I like to collect them but not actually take them. When I fell off my horse, I got tons of stuff: Demerol and Vicodin and Xanax and Valium and Oxycontin, which is supposed to be like heroin. And I'm quite scared to take them. I'm a control freak.

Madonna Interview : Rolling Stone. Rolling Stone (2005-12-01).