"You need to ask yourself why you want to do this... What are you hoping to uniquely accomplish, Barack?”

Michelle Obama asked her husband back in 2006, according to Ron Suskind's new book, "Confidence Men: Wall Street, Washington, and the Education of a President."

And he said: "This I know... When I raise my hand and take that oath of office, I think the world will look at us differently. And millions of kids across the country will look at themselves differently."