Background: Sustainable development concept simultaneously prescribe “economic development and efficiency”, “social welfare” and “environmental protection and restoring the natural resources of the land”. What has faded the result of these attempts is their failure to sustain human life in a worthy and decent manner. It seems that we need a new definition of sustainable development that besides the protection and evolution in environmental, economical and social aspects of human lives also includes his ethical promotion and spiritual development. These paper discuses the importance of the idea and analysis how it can be applied to the sustainable development process and recommends the elements of this fourth dimension.

Conclusion: Results of study show that redefining the idea of sustainable development by adding moral and spiritual sides to the common traditional triangle of sustainable development is needed. Perhaps by considering this important ignored pillar, we achieve an appropriate framework that manifests our dignity, as the successor of God on Earth.