All living creatures and all plants derive their life from the sun. if it were not for the sun, there would be darkness and nothing would grow – the earth would be without life. Yet the sun must have the help of the earth. If the sun alone were to act upon animals and plants, the heat would be so great and they would die, but there are clouds that bring rain, and the action of the sun and earth together supplies the moisture that is needed for life. The roots of a plant go down, and the deeper they go the more moisture they find. This is according to the laws of nature and is one of the evidences of the wisdom of Wakan Tanka.
– Shooter
Lakota