“When I was a little kid, I wrote this play about all these characters living in a haunted house. There was a witch who lived there, and a mummy. When they were all hassling him, this guy who bought the house - I can't believe I remember this - he said to them, 'Who's paying the mortgage on this haun”

“So, we need to delegitimize the nuclear weapon, and by de-legitimizing... meaning trying to develop a different system of security that does not depend on nuclear deterrence.”