Sustainability can't be like some sort of a moral sacrifice or political dilemma or a philanthropical cause. It has to be a design challenge.
The human dilemma is that which arises out of a man's capacity to experience himself as both subject and object at the same time.
A king, realizing his incompetence, can either delegate or abdicate his duties. A father can do neither. If only sons could see the paradox, they would understand the dilemma.