What does the quote 'All in all is all we are' mean?

"All in all is all we are" means that you are what you are and you are who you are and you cannot change that!! So believe in yourself and you will soar like an eagle!!

I believe the contrary is more correct. All in all is all we are to me means Everything in Everything is all we are. From a planetary, naturalistic, and philosophical standpoint it has to do with the Diversity and Evolution of all things. From the tallest peak, to the tiniest grain of sand, From a single celled organism, to the current pinnacle of evolution, Mankind itself. From the discovery of fire, to the ability to travel off of this planet. Earth itself is ever changing, and has been since the dawn of time. If humanity doesn't come to grips with the fact that we are all here for a singular purpose ie. Survival and expansion, then it will doom itself to failure (extinction) and the process will have to begin again. People are by nature very stubborn creatures.

If i am not wrong, this is a Tibetan mantra used during meditation (the translation of it obviously). Kurt Cobain used the words in his song "All Appologies" but considering how he was burried, or where his ashes have been scattered and as far as i am familiar part of it is in a budhist themple, he was aware of the tibetan origin of the saying "all in all is all we are". At least i heard this before i heard the song "All appoligies".