The term "ethical egoism" has been applied retroactively to philosophers such as Bernard de Mandeville and to many other materialists of his generation, although none of them declared themselves to be egoists. Note that materialism does not necessarily imply egoism, as indicated by Karl Marx, and the many other materialists who espoused forms of collectivism. It has been argued that ethical egoism can lend itself to individualist anarchism such as that of Benjamin Tucker, or the combined anarcho-communism and egoism of Emma Goldman, both of whom were proponents of many egoist ideas put forward by Max Stirner. In this context, egoism is another way of describing the sense that the common good should be enjoyed by all. However, most notable anarchists in history have been less radical, retaining altruism and a sense of the importance of the individual that is appreciable but does not go as far as egoism. Recent trends to greater appreciation of egoism within anarchism tend to come from less classical directions such as post-left anarchy or Situationism (e.g. Raoul Vaneigem). Egoism has also been referenced by anarcho-capitalists, such as Murray Rothbard.