Libertarianism is an ideology, but not a world view, according to a distinction offered by Ludwig von Mises in Human Action. A world view, Mises explains, is “an interpretation of all things,” “an explanation of all phenomena.” In short, world views “interpret the universe.” Ideology, by contrast, is a narrower concept comprising “the totality of our doctrines concerning individual conduct and social relations.” Ideologies are concerned solely with human action as it manifests in social cooperation. Religions have world views, whereas political parties have ideologies.