I have found that the only thing that does bring you happiness is doing something good for somebody who is incapable of doing it for themselves.
David LettermanEverybody is wondering what Paris Hilton will be doing next, and hell, I'm wondering what she did before.
David LettermanOur guest tonight is Michelle Obama, first lady of the United States. She's here to announce her run for president.
David LettermanPresident Obama has two years left as president. I wouldn't be surprised if he gets to appoint two new Kardashian husbands.
David Letterman