Madonna Ciccone

The thing about dancing - what it taught me all those years - is it gives you an amazing sense of discipline in forcing yourself to do things that you know are good for you but you don't really want to do.

Madonna remains the most visible performer on the planet, as well as one of the wealthiest, but would anyone seriously say that artistic self-development is her primary motivating principle? She is too busy with Kabbalah, fashion merchandising, adoption melodramas, the gym, and ill-starred horseback riding to study art.