Question: What collection of papers by a Russian-British social and political theorist appeared in 1969?

<P0-S0> "Two Concepts of Liberty" was the inaugural lecture delivered by the liberal philosopher Isaiah Berlin before the University of Oxford on 31 October 1958. <P0-S1>  It was subsequently published as a 57-page pamphlet by Oxford at the Clarendon Press. <P0-S2>  It also appears in the collection of Berlin's papers entitled "Four Essays on Liberty" (1969) and was more recently reissued in a collection entitled simply "Liberty" (2002). <SEP> <P1-S0> Shannon C. Stimson (born October 8, 1951) is an American political theorist, philosopher, and historian of ideas, whose work and teaching spans the economic and political thought of both ancient societies and the late eighteenth and nineteenth centuries. <P1-S1>  She has been Professor of Political Science at the University of California, Berkeley since 1991, where she is also affiliated and has served on the faculty boards of programs in the Political Economy of Industrial Societies, and of Peace and Conflict Studies. <P1-S2>  Professor Stimson received her PhD from Harvard University, and prior to moving to Berkeley taught at Harvard as both a graduate student and then a faculty member from 1976 to 1991. <P1-S3>  She has held the Fulbright Professorship in the United Kingdom, the Christensen Fellowship of St. Catherine's College, Oxford University, an appointment as a Distinguished Visiting Scholar at Queens' College, Cambridge University and the John K. Castle Chair in Ethics, Politics and Economics, and in Political Science at Yale University. <P1-S4>  Her research has been supported through fellowships from the Mellon Foundation, the National Endowment for the Humanities, the American Association of University Women, as well as by several prize fellowships. <P1-S5>  Her articles have appeared in numerous edited volumes, journals of political thought, economics, the history of economic thought, and political science in America and Europe. <P1-S6>  She has served on the editorial boards of the "American Political Science Review", and presently serves on the editorial board of the Adam Smith Review, and has contributed to the "Blackwell Encyclopedia of Political Thought". <SEP> <P2-S0> Murray Newton Rothbard ( ; March 2, 1926 – January 7, 1995) was an American economist, philosopher, political theorist, and historian. <P2-S1>  He was a heterodox economist of the Austrian School, a historian, and a political theorist whose writings and personal influence played a seminal role in the development of modern libertarianism. <P2-S2>  Rothbard was the founder and leading theoretician of anarcho-capitalism, a staunch advocate of historical revisionism, and a central figure in the twentieth-century American libertarian movement. <P2-S3>  He wrote over twenty books on political theory, revisionist history, economics, and other subjects. <P2-S4>  Rothbard asserted that all services provided by the "monopoly system of the corporate state" could be provided more efficiently by the private sector and wrote that the state is "the organization of robbery systematized and writ large." <P2-S5>  He called fractional-reserve banking a form of fraud and opposed central banking. <P2-S6>  He categorically opposed all military, political, and economic interventionism in the affairs of other nations. <P2-S7>  According to his protégé Hans-Hermann Hoppe, "There would be no anarcho-capitalist movement to speak of without Rothbard." <SEP> <P3-S0>  He was an essayist, conversationalist, raconteur, and lecturer. <P3-S1>  In its obituary of the scholar, the "Independent" stated that "Isaiah Berlin was often described, especially in his old age, by means of superlatives: the world's greatest talker, the century's most inspired reader, one of the finest minds of our time [...] there is no doubt that he showed in more than one direction the unexpectedly large possibilities open to us at the top end of the range of human potential". <P3-S2> Sir Isaiah Berlin (6 June 1909 – 5 November 1997) was a Russian-British social and political theorist, philosopher and historian of ideas.