Steven Michael Lukes (born 1941) is a British political and social theorist. Currently he is a professor of politics and sociology at New York University. He was formerly a professor at the University of Siena, the European University Institute (Florence) and the London School of Economics. Life and career Lukes attended the Royal Grammar School in Newcastle upon Tyne, completing his studies there in 1958. Lukes completed his BA in 1962 at Balliol College, Oxford. He worked as a research fellow at Nuffield College and as a lecturer in politics at Worcester College and completed his MA in 1967. In 1968, he completed his doctorate on the work of Émile Durkheim. From 1966 to 1987, he was fellow and tutor in politics at Balliol College. He is a Fellow of the British Academy (FBA) and a visiting professor at the University of Paris, New York University, University of California, San Diego, and Hebrew University. From 1974 to 1983, he was President of the Committee for the History of Sociology of the International Sociological Association. He was the co-director of the European Forum on Citizenship at the European University Institute from 1995 to 1996. In April 2006, Lukes married the political commentator and author Katha Pollitt, this being his third marriage. Lukes was previously a widower. He has three children from his previous marriage to the English barrister Nina Stanger. Academic interests Lukes' main interests are political and social theory, the sociology of Durkheim and his followers, individualism, rationality, the category of the person, Marxism and ethics, sociology of morality and new forms of liberalism, varieties of conceptions of power, the notion of the "good society", rationality and relativism, moral conflict and politics. He is a member of the editorial board of the European Journal of Sociology and directs a research project on what is left of the socialist idea in Western and Eastern Europe. The three dimensions of power One of Lukes' academic theories is that of the "three faces of power," presented in his book, Power: A Radical View. This theory claims that power is exercised in three ways: decision-making power, non-decision-making power, and ideological power. Decision-making power is the most public of the three dimensions. Analysis of this "face" focuses on policy preferences revealed through political action. Non-decision-making power is that which sets the agenda in debates and makes certain issues (e.g., the merits of socialism in the