“It’s logically impossible to have just ‘one’ of something. One ‘circle’ implies that there is an outside and an inside.  Same goes for a Universe — it is a tool for us to begin down the path of understanding, but not the final answer.  All we can do is extrapolate on themes we experience — i.e., how particles look in atoms, how neurons look in brains, how bees look around their hive, and how the Universe looks to our best telescopes — all hints that there are more levels to this thing!”