That there are as many worlds as there are people.
I don't know who said this originally, but when you think about it, it's one of the most logical things that can be said.
Everyone sees things through their own eyes, through their own perspective, and everyone has their own opinions about everything.
We all may share the same physical world, but we all see the world and experience it in a completely different way.
This is why we all live in our own worlds. This means, to some extent, that we are also the masters of our worlds.
We shape our world and our lives.