You either evolve or you don't. I don't like old people on a rock n' roll stage. I think they look pathetic, me included. And the fact that I represent an era means I can't just go out there and do all new stuff. They would all say, 'Sing 'White Rabbit,'' and I'd say no? That's rude.
You cannot go against nature. She is stronger than the strongest of men. We can permit ourselves some liberties, but in details only.