Challis Professor in Jurisprudence in the University of Sydney. He also holds a position of Professor in the Centre for Europe in the University of Warsaw, and is visiting professor (in 2010 and 2011) at the University of Trento, Italy and in Cardozo Law School in New York. He was Professor of Legal Theory and Philosophy of Law in the Department of Law, European University Institute in Florence (1999- 2009). He also taught as visiting professor, at a number of universities in Europe, Asia and the United States. He has written extensively on philosophy of law, political philosophy and comparative constitutional law. Fellow of the Academy of the Social Sciences in Australia (elected in 1990), Wojciech Sadurski is member of a number of supervisory or program boards, including the Institute of Public Affairs (Poland), Freedom of Press Observatory (Poland) and the Centre for International Affairs (Poland), and also of editorial boards, including the European Law Journal, Politics, Philosophy and Economics, and Law and Philosophy Library (Springer Scientific).