There is a trade off -- as you grow older you gain wisdom but you lose spontaneity.

There is a trade off - as you grow older you gain wisdom but you lose spontaneity.

The skew of the audience has probably dropped 10 years, ... Older people don't have the spontaneity and the energy. You mix in 15-percent young kids and the older people enjoy the show more.

I wouldn't trade those boos for anything in the world. It was a wonderful experience with 20,000 world-class Philadelphia fans on my back.

You gotta know when to hold 'em, know when to fold 'em, know when to walk away, know when to run.

Growing older is not upsetting; being perceived as old is.