Roy A. Childs, Jr. (1949–1992) was a libertarian essayist and critic who counted among his early influences Ayn Rand, Ludwig von Mises, Rose Wilder Lane, and Robert LeFevre. In the 1960s, Childs became friends with Murray Rothbard, and Childs's controversial paper, "The Invisible Hand Strikes Back," was published in the inaugural issue of the Journal of Libertarian Studies. In 1977 he became a research associate of the Center for Libertarian Studies.
Ludwig von Mises: "Liberalism, which demands full freedom of the economy, seeks to dissolve the difficulties that the diversity of political arrangements pits against the development of trade by separating the economy from the state. It strives for the greatest possible unification of law, in the last analysis for world unity of law. But it does not believe that to reach this goal, great empires or even a world empire must be created." - Nation, State, and Economy