Have we worn you out? /hug
He is, however, quite right. You can talk all you want about there being other universes, an outside even. The current reality is that we can't even tell if we're looking at the whole universe or not and unless we invent some spectacular piece of technology we may never find out.
So speculate! Imagine! Don't get attached. And come back to reality to breathe. String Theorists are turning purple.