Deep ecology is an environmental philosophy that promotes the inherent worth of all living beings regardless of their instrumental utility to human needs, and the restructuring of modern human societies in accordance with such ideas. Deep ecology argues that the natural world is a complex of relationships in which the existence of organisms is dependent on the existence of others within ecosystems. It argues that non-vital human interference with or destruction of the natural world poses a threat therefore not only to humans but to all organisms constituting the natural order. Deep ecology's core principle is the belief that the living environment as a whole should be respected and regarded as having certain basic moral and legal rights to live and flourish, independent of its instrumental benefits for human use. Deep ecology is often framed in terms of the idea of a much broader sociality; it recognizes diverse communities of life on Earth that are composed not only through biotic factors but also, where applicable, through ethical relations, that is, the valuing of other beings as more than just resources. It is described as "deep" because it is regarded as looking more deeply into the reality of humanity's relationship with the natural world, arriving at philosophically more profound conclusions than those of mainstream environmentalism. The movement does not subscribe to anthropocentric environmentalism (which is concerned with conservation of the environment only for exploitation by and for human purposes), since deep ecology is grounded in a different set of philosophical assumptions. Deep ecology takes a holistic view of the world humans live in and seeks to apply to life the understanding that the separate parts of the ecosystem (including humans) function as a whole. The philosophy addresses core principles of different environmental and green movements and advocates a system of environmental ethics advocating wilderness preservation, non-coercive policies encouraging human population decline, and simple living. Origins In his original 1973 deep ecology paper, Arne Næss stated that he was inspired by ecologists who were studying the ecosystems throughout the world. Naess also made clear that he felt the real motivation to 'free nature' was spiritual and intuitive. 'Your motivation comes from your total view or your philosophical, religious opinions,' he said, 'so that you feel, when you are working in favour of free nature, you are working for something within your self, that ... demands changes. So you are motivated from what