Jop,
I once read that the answer to who and what we are lies in our eyes. When you take a closer look and give it a thought the Iris has allot of similarity with a nebula/galaxy. All those beautifull colors and a black hole in the middle. Just like theres a black hole in the centre of most and also our Milkyway. Like we are the universe experiencing itself through different points of view.
Have a good time!