Technical and economic professionals have to expect serious challenges if they want to take the insurance of the sustainable development of the natural environment into co nsideration. Apart from the professional difficulties they especially have to prepare for the fact that mainly the proponents of ecology make their work difficult. They have to hold their ground in the field of force where the politicians of green organiza tions and the environmental science are dead set against each other. Further on we do not intend to get entangled in this incoherent system of relations. We would rather look into its ethical connections and the history of its origin.