Agrarians are committed to preserving both communities and the material means of life, to cultivating practices that ensure that the essential means of life suffice for all members of the present generation and are not diminished for those who come after. Agrarianism in this sense is, and has nearly always been, a marginal culture existing at the edge or under the domination of a larger culture whose ideology, social system, and economy are fundamentally different. So agrarian writers, both ancient and modern, always speak with a vivid awareness of the threat posed by the culture of the powerful.