There’s a lot of references to this, but it looks like there’s not a known source. Interestingly, the first reference to this tablet was from 1908. https://quoteinvestigator.com/2012/10/22/world-end/
So it's a fake story from 1908
It's annoying that they referenced several times the quote appeared since the early 1900s, but didn't take a single step to determine if such a thing was written down in a museum in Istanbul.
There’s a lot of references to this, but it looks like there’s not a known source. Interestingly, the first reference to this tablet was from 1908. https://quoteinvestigator.com/2012/10/22/world-end/
So it's a fake story from 1908
It's annoying that they referenced several times the quote appeared since the early 1900s, but didn't take a single step to determine if such a thing was written down in a museum in Istanbul.