" Everything an Indian does is in a circle, and that is because the power of the World always works in circles, and everything tries to be round . . . The sky is round and I have heard the earth is round like a ball, and so are all the stars. The wind in its greatest power whirls, birds make their nest in circles, for theirs is the same religion as ours. "

― , Black Elk Speaks: Being the Life Story of a Holy Man of the Oglala Sioux