Hollow earth theory says that there is a great central sun inside the earth, and there are vast areas of land on the inner surface of the sphere, filled with life... even human life.
Hollow Earth theory shouldn't be taken literally:
https://www.youtube.com/watch?v=Z7Go1aafNVE
I think the idea of a Great Central Sun is a symbol of the greatest attractor - the frequency of unconditional love. It is possible to sort of prove that unconditional love is greater than, for example, unconditional hate, because you are so unconditionally loved that you are given a choice to believe that you are not loved at all.
Expressing it in terms of taste, one might argue that love is evil, because it's too "sweet" and one prefers "bitter" instead, but then isn't it "sweet" to be able to choose "bitter"? See? Love is the greatest attractor, we need to struggle to keep away from it, we literally "fall in love": https://www.youtube.com/watch?v=Q8igZ4KJPFo
One more analogy in terms of creating and destroying. One collectively cannot destroy more than it has created. At the level of zero point One can either stand still or start creating as there is nothing to destroy yet. One cannot destroy itself, because existence is self-contained (that's why I actually think third law applies).
So far, reality for each of us is, we are born, we live and we die. The rest of it is simply stuff that we do in life. The rest of it is simply ideas, and on occasion, theories. What beyond this do we understand?