The TV show Fringe, and Identity

Any watchers of the TV show, 'Fringe'?

In this TV show there are two parallel universes at war with each other. There is an urgency to protect 'this' side at the expense of the 'other' side. Each side has a different goal, and the identity of each character is to be allied with one side and therefore against the other side.

But what would happen if the brilliant scientist of both universes, Walter/Walternate, figured out that they are not really working at cross-purposes, that they have the same goals? What if they had the following conversation?:

WALTER: "I'm so sorry I stole your son. I was just trying to..."

WALTERNATE: "...save his life. Yes. And you did. If you had not, he would have died. I am eternally grateful to you for that."

WALTER: "Thank you!"

WALTERNATE: "Now I think you and I need to figure out how to..."

WALTER: "...repair the damage to the continuum! Yes! Exactly what I was thinking! Asteroid, get us some pudding, we've got WORK to do!"

That's an idea of what might happen if they decided to work together. But, what would happen if one 'side' won, and completely destroyed their mirror? What would Broyles, Olivia, Peter, Astrid, and dear old Walter do? There would be no more identity as part of the Fringe division because there would no longer be a reason for the Fringe division to exist. So there must be a higher ultimate purpose in their individual lives.

Does our life have any significance to it? Most people would say Yes. Because our life has meaning is precisely why our identity or life's purpose can not be laid out in an 'us versus them' framework. The ultimate meaning of life somehow goes beyond this life, whatever that might mean. The temporary conflict of 'us versus them' is no more reality and has no more permanence than a fictional TV show.

Are you more defined by what you stand against, or what you stand for?

We look out into space, and no matter how far we try to see, even to aiding our vision with special telescopes and instrumentation, and what do we find? We find more space, and so we get a concept of infinity. But what if we found a wall? Some might think that meant the boundary. But then someone would ask how thick that wall was, which would imply that there was a farther edge and more space on the other side of course. So you see, no matter what we find at the farthest reaches of space, to us it will always mean infinity! So, who is it that glimpses the infinite? Whoever it is, is way beyond an 'us versus them' identity.