My dear Frodo! exclaimed Gandalf. Hobbits really are amazing creatures, as I have said before. You can learn all that there is to know about their ways in a month, and yet after a hundred years they can still surprise you at a pinch.
While we agree that Frodo and Sam completed the Quest (albeit with an assist from Smeagol), the mover behind all that happened was Mithrandir.
I just wish there was a Wizard to help us.