Typically your work belongs to the person who pays you for it. So it seems to me that if it’s paid for by the public, then it’s owned by the public.
I’d recommend The Bhagavad Gita. You don’t have to be of the Hindu faith to get something out of it, it’s enough just to see it as a different way to view things.
My favorite translation is by Ranchor Prime, because his version is organized into parables instead of a line-by-line analysis, but there is also a nice public domain version at Project Gutenberg, HERE.
My wife reminded me that The Answer Is… Reflections on My Life by Alex Trebek is really good, too.