Utilitarianism The concept of sustainable development is an attempt to balance two moral demands placed on the environment. The first demand is for development, including economic development or growth. It arises mainly from the interests of people who live in developing countries. Their present poverty gives them a low quality of life and calls urgently for steps to improve their quality of life. The second demand is for sustainability, for ensuring that we do not risk the future in the sake of gains in the present. This arises from the interests of people in the future who will need access to a reasonable quality