Environmental ethics is theory and practice about appropriate concern for, values in, and duties regarding the natural world. By classical accounts, ethics is people relating to people in justice and love. Environmental ethics starts with human concerns for a quality environment, and some think this shapes the ethic from start to finish. Others hold that, beyond interhuman concerns, values are at stake when humans relate to animals, plants, species, and ecosystems. According to their vision, humans ought to find nature sometimes morally considerable in itself, and this turns ethics in new directions.