Visions of it swam sickeningly through his nauseated mind. There was no way his imagination could feel the impact of the whole Earth having gone, it was too big. He prodded his feelings by thinking that his parents and his sister had gone. No reaction. He thought of all the people he had been close to. No reaction. Then he thought of a complete stranger he had been standing behind in the queue at the supermarket before and felt a sudden stab - the supermarket was gone, everything in it was gone. Nelson's Column had gone! Nelson's Column had gone and there would be no outcry, because there was no one left to make an outcry. From now on Nelson's Column only existed in his mind. England only existed in his mind - his mind, stuck here in this dank smelly steel-lined spaceship. A wave of claustrophobia closed in on him.
England no longer existed. He'd got that - somehow he'd got it. He tried again. America, he thought, has gone. He couldn't grasp it. He decided to start smaller again. New York has gone. No reaction. He'd never seriously believed it existed anyway. The dollar, he thought, had sunk for ever. Slight tremor there. Every Bogart movie has been wiped, he said to himself, and that gave him a nasty knock. McDonalds, he thought. There is no longer any such thing as a McDonald's hamburger.
He passed out.
It's from the 'The Hitchhiker's Guide to the Galaxy'. There, I saved you a google.
Max Tegmark, from the Massachusetts Institute of Technology and the Foundational Questions Institute (FQXi), presents a cosmic perspective on the future of life, covering our increasing scientific knowledge, the cosmic background radiation, the ultimate fate of the universe, and what we need to do to ensure the human race's survival and flourishing in the short and long term. He's strongly into the importance of xrisk reduction.