…We were born vampires."
"I thought you became –"
"— vampires by being bitten? Dear me, no. Oh, we can turn people into vampires, it’s an easy technique, but what would be the point? When you eat… now what is it you eat? Oh yes, chocolate… you don’t want to turn it into another Agnes Nitt, do you? Less chocolate to go around."
He sighed. "Oh dear, superstition, superstition everywhere we turn.

Autor: Terry Pratchett