Sustainability is the ability to exist and develop without depleting natural resources for the future.

The sustainable development that meets the needs of the present without compromising the ability of future generations to meet their own needs. It assumes that resources are finite, and so should be used conservatively and carefully to ensure that there is enough for future generations, without decreasing present quality of life. A sustainable society must be socially responsible, focusing on environmental protection and dynamic equilibrium in human and natural systems.