The pain of our earth

In this novel you read something about the longing of the planet earth with its plant world and its animal world to lead a peaceful and prosperous life, as the spiritual being, embedded in the spiri-tual energy, made development process possible.
Planet Earth, a small planet on the edge of a galaxy, is doing well. What one cannot say about one's thinking corporeal living beings of the higher spiritual order, i.e. humans. They pull together, are greedy to the point and ultimately cruelly kill each other.
What causes the human species in particular to constantly get involved with inhuman character traits?