The Diamond Sutra: The World's Oldest Copyleft Book
In 1907, archaeologist Sir Marc... ...but that's a different story). The Diamond Sutra has the colophon at the inner end that reads:... ...t date translates to May 11, 868, which makes the Diamond Sutra not only the world's oldest surviving c...
https://www.neatorama.com/2012/05/11/the-diamond-sutra-the-worlds-oldest-copyleft-book/
