Crazy Horse dreamed and went into the world where there is nothing but the spirits of things. That is the real world that is behind this one, and everything we see here is something like a shadow from that world.... It was this vision that gave him his great power, for when he went into a fight, he had only to think of that world to be in it again, so that he could go through anything and not be hurt
Black ElkWe should understand well that all things are the work of the Great Spirit. We should know the Great Spirit is within all things: the trees, the grasses, the rivers, the mountains, and the four-legged and winged peoples; and even more important, we should understand that the Great Spirit is also above all these things and peoples. When we do understand all this deeply in our hearts, then we will fear, and love, and know the Great Spirit, and then we will be and act and live as the Spirit intends.
Black ElkGrown men may learn from very little children, for the hearts of little children are pure, and, therefore, the Great Spirit may show to them many things which older people miss.
Black Elk