You must have gone to the same school of higher scientific knowledge as the cleric.
What you say is true, as long as you're only talking about the sun and earth - if you observe the sun from the earth, it appears that the sun is revolving around the earth, and vice versa. BUT, when you take into account the movement of the other planets, it is irrefutably clear (unless you deny the scientific method and rely on religious tradition) that the earth (and other planets) revolve around the sun.
I believe jdege is wrong about that (my post #10), but do not be too hard on him. For although I think it's wrong, the above statement is actually a very close approximation to reality!
And that's because the centripetal acceleration of the Sun-Earth system is small, so small that if you take it to be zero your science won't be off by much. So jdege's statement is very close to being correct.
I'm a chemist by training, not an astrophysicist. So if I'm wrong here, I hope someone corrects me.