I've read quite a few books on the Battle over the years and recently stumbled across this quote by US General Henry “Hap” Arnold
“On the 8th of August 1940, the RAF Fighter Command took off to save everything, and between then and the end of September they saved it all”
I like it because it's an appreciation, from outside the RAF and UK, of not just the sacrifice but also the result of the sacrifice.
They really did save it all for Europe.