How can human beings live together correctly?

Recently I found following sentence in the internet:

“Even if we spent as much money on space exploration as we do on war, funding a mission to Mars would not solve any of our problems.” (Annalee Newitz)

Humankind is planning underwater habitats, the construction of huge eco-cities, the colonisation of another planet. The question remains: Would that solve any of our problems? Were our problem solved once we had conquered the last paradisiac island in the South Seas?

“How can human beings live together correctly? That is the deepest question of our time. In spite of all the necessary work in the areas of ecology, technology and strategy, we keep coming back to this goal. The areas of crisis of our time is the relationship between human beings. In this connection, I would like to quote Eugen Drewermann: “Human misery is international, it does not know any boundaries, nor does it allow any. At every place on earth, human suffering is great and it is transnational. In reality, one cannot say: Israel is here, and Canaan is there.” It is the task and the goal of our healing work to see, understand and end this misery worldwide.” (Dieter Duhm)