Anthropocentrism (; from Greek ἄνθρωπος, ánthrōpos, "human being"; and κέντρον, kéntron, "center") is the belief that human beings are the central or most significant species on the planet (in the sense that they are considered to have a moral status or value higher than that of all other organisms), or the assessment of reality through an exclusively human perspective. The term can be used interchangeably with humanocentrism, and some refer to the concept as human supremacy or human exceptionalism. The mediocrity principle is the opposite of anthropocentrism. Anthropocentrism is considered to be profoundly embedded in many modern human cultures and conscious acts. It is a major concept in the field of environmental ethics and environmental philosophy, where it is often considered to be the root cause of problems created by human action within the ecosphere.