Old Things We Don't Know

At the top of my sidebar (as you might have noticed) I have an automatic quotation gadget, over which I have no control. Today's quotation, however, happened to fit in rather well with my last post (Ancient Times), so I thought I'd nail it down in a post of its own: 

There's nothing new under the sun*, but there are lots of old things we don't know.
Ambrose Bierce (1842-1914)

 *This in turn is a Biblical quote:

What has been will be again, what has been done will be done again; *there is nothing new under the sun.
(Ecclesiastes 1:9)