Who is the Force?

The only correct answer to this is All Are.

Who is not the Force would be a better question IMHO.

Yep. Just look in the mirror

Kalkho wrote: When I look into the infinite cosmos, I know how small I am compared to the Cosmos.

I read this and immediately remembered this bit by Neil deGrasse Tyson. It shows us that we aren't small compared to anything, and that we are connected to everything:

https://www.youtube.com/watch?v=9D05ej8u-gU

To my believes it is the Universal Spirit which is in every element, every magical or spiritual act...it is that sacred breath or life, the foundation of the earth and in the cleansing powers of the water and fire. It is that which enfolds us and that which is inside us, giving us the power to better ourselves, gain knowledge, wisdom and most of all to see creation truly and the beauty of it, but also see the harshness and transforming powers within it. The force is that which is you, the cosmos, and everything above in, below it and which surrounds it and is within it.

The answer to this question comes from my favorite anime series of all time Fullmetal Alchemist: Brotherhood. Edward Elric Says, "Everything we see, everyone we meet, is caught up in a great unseen flow. But it's bigger than that. It's the entire world, the entire universe even. And compared to something as big as that, Al, you and I are tiny, not even the size of ants. Only one small part within a much greater flow. Nothing more than a fraction of the whole. But by putting all those "ones" together, you get one great "All", just like Teacher said. The flow of this universe follows laws of such magnitude that you and I can't even imagine them."

May the Force be with you,
Rai