introduced himself to the american people in 2004 in boston, young, dark hair, hopeful, optimistic, is completely different from the barak obama who sat, president barak obama who sat before chris matthews. >> that being said, he's still, if you go back to that 2004 key note address in boston, the same, you will hear the same barak obama who is president now. there is a consistency there. >> every president in a way seems to have greyer hair and thick thin i skin. >> the elizabeth warren wing is under attack. it is not from senate republicans. that's next. while a body in motion tends to stay in motion. staying active can actually ease arthritis symptoms.