Sandy Everett

“After a while the Senior Wrangler said, "Do you know, I read the other day that every atom in your body is changed every seven years? New ones keep getting attached and old ones keep on dropping off. It goes on all the time. Marvelous, really."

The Senior Wrangler could do to a conversation what it takes quite thick treacle to do to the pedals of a precision watch.

"Yes? What happens to the old ones?" said Ridcully, interested despite himself.

"Dunno. They just float around in the air, I suppose, until they get attached to someone else."

The Archchancellor looked affronted.

"What, even wizards?"

"Oh, yes. Everyone. It's part of the miracle of existence."

"Is it? Sounds like bad hygiene to me," said the Archchancellor. "I suppose there's no way of stopping it?"

"I shouldn't think so," said the Senior Wrangler, doubtfully. "I don't think you're supposed to stop miracles of existence."

"But that means everythin' is made up of everythin' else," said Ridcully.

"Yes. Isn't it amazing?”
― Terry Pratchett, Reaper Man

“You Bastard was thinking: there seems to be some growing dimensional instability here, swinging from zero to nearly forty-five degrees by the look of it. How interesting. I wonder what’s causing it? Let V equal 3. Let Tau equal Chi/4. cudcudcud Let Kappa/y be an Evil-Smelling-Bugger* (* Renowned as the greatest camel mathematician of all time, who invented a math of eight-dimensional space while lying down with his nostrils closed in a violent sandstorm.) differential tensor domain with four imaginary spin co-efficients. . .”
― Terry Pratchett, Pyramids