You like science? You enjoy science? Always use it for good, never for evil. Can you promise me that?
David LettermanA lot of people think I'm retiring, but I've been telling a fib. I've been forced to leave this job because I gave $75,000 to the Clinton Foundation.
David LettermanI think the number one public-relations blunder Osama has made is that he lives in a cave-fortress and if there's one thing we've learned from it's that you can't trust a guy who lives in a cave-fortress -- Lex Luther, Captain Nemo, Dr. Evil. I'm telling you the list goes on.
David Letterman