What I am OR What I am not

Sit outside a window
Watching inside for all things better
Only to become sadden that it's not me in there
Being watched by others.
I'm not curious to them.
I'm not pretty to them.
I'm not interesting to them.
I'm not playful to them.
I'm neither big or small.
What I am is what I am.
Is this not enough?
Ask me and I'll tell you the world
As me and I'll tell you the universe
I know the universe
I dream it all the time.
I am the universe of eternity.