Sustainable development is a system that combines the various modes of development (economic, financial, social, cultural ...) the standards of environmental concerns. This natural order is not compatible with the social (dis)order, which requires in a liberal, according to Quesnay, the regulation by a despot. The regulation of the natural order can go very far to justify the flow of people resulting from famine and unemployment. Forgetting the priority of the person in relation to its environment, sustainable development raises many paradoxes.