There is nothing new under the sun but there are lots of old things we don’t know.
-Ambrose Bierce, (1842-1914?), American journalist, author.
My take: thanks goodness for the internet and Google that it is now easier than ever to find out about “things we don’t know”.
Biographical note: Bierce disappeared in December 1913 while traveling with Pancho Villa’s revolutionary army in Mexico. His date of death is commonly shown as “1914?”.