 In ethics, value pluralism also known as ethical pluralism or moral pluralism is the idea that there are several values which may be equally correct and fundamental, and yet in conflict with each other. In addition, value pluralism postulates that in many cases, such incompatible values may be incommensurable, in the sense that there is no objective ordering of them in terms of importance. Value pluralism is opposed to value monism. Value pluralism is a theory in many ethics, rather than a theory of normative ethics, or a set of values in itself. Oxford philosopher and historian of ideas Isaiah Berlin is credited with being the first to popularize a substantial work describing the theory of objective value pluralism, bringing it to the attention of academia CF. The Isaiah Berlin Virtual Library The related idea that fundamental values can end, in some cases, due conflict with each other is prominent in the thought of Max Weber, captured in his notion of polytheism.