Henry Marks, a collector of rare books ran into an acquaintance, Arnold,
who told him he had just thrown away an old Bible that he found in a dusty,
old box. He happened to mention that Guten-somebody-or-other had printed it.
‘Not Gutenberg?’ gasped Henry.
‘Yes, that was it,’ remembered Arnold.
‘You idiot’ Henry exploded, ‘You’ve thrown away one of the first books
ever printed. A copy recently sold at auction for half a million dollars.’
‘Oh, I don’t think this book would have been worth anything close to that
much,’ replied Arnold. ‘It was scribbled all over in the margins by some guy
named Martin Luther.’