"The great spirit," "Great Mystery"

The first peace,
Which is the most important,
Is that which comes from
Within the souls of men when they realize their relationship,
Their oneness, with the universe
And all it's powers,
And when they realize that
At the center of the universe dwells Wakan-Tanka, and that
this center is really everywhere,
It is within each of us.
This is the real peace, and the others are but reflections of this.
The second peace is that which is made between two individuals,
And the third is that which is made between two nations. But above all you should understand that there can never be peace between nations until there is first known that true peace which...is within the souls of men.

Black Elk
The Sacred Pipe