I nearly killed Stephen Hawking once. I turned the corner of Pembroke Street in my little red Renault and there he was, in the middle of the bloody road. I tell you, he's a terrible driver.
That might have ended my academic career, don't you think? Can you imagine the headlines?
The worst thing is, after I parked the car and stumbled into the department, rather shaken, I confessed my near-miss to a colleague.
"Oh" he said. "I wouldn't have worried. He did all his best work twenty years ago".