The material world is based on envy, a quality absent in the spiritual world. Once Srila Prabhupada spoke of the relationship between the grass and the trees in the spiritual world. He said that the trees would say, how wonderful is the grass. It provides a nice, soft carpet for the Lord and the gopis to walk on. And the grasses would say, how wonderful are the trees as they give the Lord and the gopis a wonderful sight upon which to gaze.