I think I have told you, but if I have not, you must have understood, that a man who has a vision is not able to use the power of it until after he has performed the vision on earth for the people to see.
Black ElkThe sky is round, and I have heard that the earth is round like a ball, and so are all the stars. The wind, in its greatest power, whirls. Birds make their nests in circles, for theirs is the same religion as ours.
Black ElkYou remember that my great vision came to me when I was only nine years old, and you have seen that I was not much good for anything until after I had performed the horse dance near the mouth of the Tongue River during my eighteenth summer.
Black Elk