Attention Terry Pratchett fans. I urgently need to know which is the correct version of the following quote from 'Reaper Man': "Five exclamation marks, the sure sign of an insane mind" or "Multiple exclamation marks, the sure sign of an insane mind"?

"Five exclamation marks, the sure sign of an insane mind."

-- (Terry Pratchett, Reaper Man)


http://www.lspace.org/books/pqf/reaper-man.html

“‘Multiple exclamation marks,’ he went on, shaking his head, ‘are a sure sign of a diseased mind.’(Terry Pratchett in “Eric”)

“Five exclamation marks, the sure sign of an insane mind.” (Terry Pratchett in “Reaper Man”)

“‘And all those exclamation marks, you notice? Five? A sure sign of someone who wears his underpants on his head.’” (Terry Pratchett in “Maskerade”)



http://wiki.lspace.org/mediawiki/Multiple_exclamation_marks

Thanks! Much appreciated!