“I got Nasa to loan me a moon rock, carbon-dated 3.6 billion years old. I put it on the table in the Oval Office and when people started the crazy stuff, I’d say, ‘Wait a minute guys. See that rock, it’s 3.6 billion years old. We’re all just passing through, take a deep breath, calm down, let’s see what makes sense.’ It had an incredible calming effect!”